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Match Predictor
Pre-match Prediction
Houston Astros 39%Seattle Mariners 61%
Market LinesRun Line: Seattle Mariners -1Total: O/U 7.5
↓
Model: Under 7.5
Model projects 7.3 total runs vs 7.5 line
Houston Astros
Bullpen ERA 5.99 (poor). Late innings could add runs.
All Over 7.5
81%
13/16
MLB: 48%
Starter
67%
2/3
vs SEA
67%
2/3
Avg Total
12.1
MLB: 8.9
Game Starter (3) Last Starter vs SEA vs SEA (3)
Mike Burrows #50 · RHP · Age 27
5.62
ERA (2026)
8.4
K/9 (2026)
3
Starts (2026)
8.0
Avg Total (2026)
Last 3:
L @COL (Apr 07): 5.1IP, 3ER, 3K
W BOS (Apr 01): 5.0IP, 2ER, 6K
L LAA (Mar 27): 5.2IP, 5ER, 6K
L @COL (Apr 07): 5.1IP, 3ER, 3K
W BOS (Apr 01): 5.0IP, 2ER, 6K
L LAA (Mar 27): 5.2IP, 5ER, 6K
vs SEA: ND (Jul 05 2025): 5.0 IP, 0 ER, 6 K
Bullpen (2026 Season)Poor
ERA: 5.99MLB Avg: 3.9510 relievers
⚠
Workload Alert: Allowed 9 runs on 2026-04-08 vs COL. Bullpen arms likely still recovering.
Recent: L 1-5L 1-9L 6-9L 7-8L 1-6
Lineup vs Mike Burrows (Career)
| Batter | Pos | PA | AVG | OPS | HR |
|---|---|---|---|---|---|
| Cal Raleigh | C | 3 | .000 | 1.000 | 0 |
| J.P. Crawford | SS | 3 | .333 | 1.000 | 0 |
| Julio Rodriguez | CF | 3 | .000 | 0.333 | 0 |
| Randy Arozarena | LF | 3 | .000 | 0.000 | 0 |
| Cole Young | 2B | 2 | .000 | 0.000 | 0 |
| Dominic Canzone | RF | 2 | .500 | 1.500 | 0 |
| Josh Naylor | 1B | 2 | .500 | 1.000 | 0 |
| Luke Raley | RF | 2 | .500 | 1.000 | 0 |
5 batters with no matchup history
Seattle Mariners
Bullpen ERA 2.10 (elite). Should hold late-inning leads.
All Over 7.5
44%
7/16
MLB: 48%
Starter
33%
1/3
vs HOU
67%
2/3
Avg Total
7.4
MLB: 8.9
Game Starter (3) Last Starter vs HOU vs HOU (3)
George Kirby #68 · RHP · Age 28
3.60
ERA (2026)
7.2
K/9 (2026)
3
Starts (2026)
6.3
Avg Total (2026)
Last 3:
L @TEX (Apr 07): 8.0IP, 3ER, 4K
L NYY (Apr 01): 6.0IP, 4ER, 6K
W CLE (Mar 27): 6.0IP, 1ER, 6K
L @TEX (Apr 07): 8.0IP, 3ER, 4K
L NYY (Apr 01): 6.0IP, 4ER, 6K
W CLE (Mar 27): 6.0IP, 1ER, 6K
vs HOU: W (Sep 25 2024): 6.0 IP, 1 ER, 6 K
Bullpen (2026 Season)Elite
ERA: 2.10MLB Avg: 3.958 relievers
Recent: L 2-3L 0-3W 9-6W 8-7W 6-1
Lineup vs George Kirby (Career)
| Batter | Pos | PA | AVG | OPS | HR |
|---|---|---|---|---|---|
| Jeremy Pena | SS | 23 | .300 | 0.791 | 0 |
| Jose Altuve | LF | 19 | .176 | 0.387 | 0 |
| Yainer Diaz | C | 19 | .263 | 0.526 | 0 |
| Yordan Alvarez | LF | 14 | .214 | 0.500 | 0 |
| Carlos Correa | SS | 12 | .364 | 1.144 | 1 |
| Christian Vazquez | C | 10 | .200 | 0.500 | 0 |
| Isaac Paredes | 3B | 10 | .200 | 0.400 | 0 |
| Nick Allen | SS | 8 | .143 | 0.393 | 0 |
| Christian Walker | 1B | 5 | .200 | 0.400 | 0 |
| Cam Smith | RF | 4 | .667 | 1.417 | 0 |
| Joey Loperfido | LF | 4 | .500 | 1.000 | 0 |
2 batters with no matchup history
Our Top PicksLive Odds
Top PickSeattle Mariners -1.5 (+112), MEDIUM con
Seattle Mariners -1.5 (+112), MEDIUM confidence. Our model projects a 0.9-run Seattle edge at 4.1 to 3.2. The case for covering the run line rests on ...
PickUnder 7.5 (-116), MEDIUM confidence. Our
Under 7.5 (-116), MEDIUM confidence. Our model lands at 7.3 total runs, a directional lean that aligns with T-Mobile Park's 0.95 runs factor. Kirby's ...
PickGeorge Kirby Under 5.5 strikeouts (-128)
George Kirby Under 5.5 strikeouts (-128), MEDIUM confidence. Kirby's last three starts: 4 K, 6 K, 6 K. The average across those outings sits at 5.33, ...
Houston Astros vs Seattle Mariners Game Preview
The Seattle Mariners send George Kirby to the mound tonight, and the pitching matchup here is not subtle. Kirby has walked just 5 batters across 20 innings in 2026. That number does the talking. His 3.60 ERA reflects a starter who attacks the zone, limits damage, and forces early contact. On the other side, the Houston Astros counter with Mike Burrows, who owns a 5.62 ERA in 16 innings this spring. Burrows gave up 5 ER in 5.2 innings against the Angels in his first start, bounced back with 2 ER across 5 innings against Boston, then allowed 3 ER in 5.1 innings at Colorado most recently. His 3 HR allowed in 16 innings, a 1.69 HR/9 rate, is a liability going into tonight's game. When one starter is walking fewer than one batter per four innings and the other has a 5.62 ERA through three starts, the game begins here before a single pitch is thrown in tonight's MLB action.
The series backdrop only reinforces Seattle's structural advantage. The Mariners have won the first two games of this set, outscoring Houston 23-14 across three games played this week. The Astros arrive Monday on a seven-game losing streak and carrying a 1-8 road record. That road futility is not noise. It reflects a team that cannot hold games away from home, and tonight they face a bullpen that has posted a 2.10 ERA in 2026. Even in a scenario where Kirby allows three runs through five innings, Seattle's relief corps presents a near-impossible hill for Houston to climb late. The Astros bullpen sits at a 5.99 ERA, which cuts the other way in any late-inning scenario where Houston needs to hold a lead or chip into a deficit.
The batter-versus-pitcher history at the top of the Houston order tells a consistent story. Jose Altuve carries a .176 average and 0.387 OPS across 19 career plate appearances against Kirby, including a 0.000 OPS across 9 PA in the 2024 season. Yordan Alvarez has produced just a .500 OPS in 14 career PA against Kirby with zero home runs. The one legitimate threat in this lineup is Carlos Correa, who owns a .364 average and 1.144 OPS across 12 career PA against Kirby, including a home run. That is a matchup worth monitoring and the core of any contrarian case for Houston tonight. On Seattle's side, Randy Arozarena carries a .845 OPS against right-handed pitching this season and has produced a .826 OPS over the last 28 days. Brendan Donovan is posting a 1.326 OPS versus right-handed pitching in 2026. Both face Burrows, who has struggled to miss bats and keep the ball in the park all spring.
T-Mobile Park's retractable roof and run-suppression environment provide the final layer of context. The park runs at a 0.95 runs factor and 0.90 home run factor, taking scoring upside off the table for both offenses. Our model projects a 4.1 to 3.2 Seattle final, a projected total of 7.3 against a market line sitting at 7.5. The directional lean is clear, the park confirms it, and the pitching matchup reinforces it at every level.
Houston Astros vs Seattle Mariners Key Insights
- George Kirby has walked 5 batters in 20 innings in 2026. That is elite command. Burrows has allowed 6 walks in 16 innings with a 5.62 ERA. The starting pitching gap is the largest structural edge on the board tonight.
- T-Mobile Park runs at a 0.95 factor with a 0.90 home run multiplier. Both offenses face a run-suppression ceiling. Seattle averages just 3.9 runs per game this season, and even Houston's .823 team OPS has a hard limit here.
- Jose Altuve carries a .176 average and 0.387 OPS in 19 career plate appearances against Kirby. His 2024 sample of 9 PA produced a 0.000 OPS. For a hitter of his caliber, that career BvP suppression is one of the more pronounced on the card.
- Seattle's bullpen ERA of 2.10 is the anchor of this game. Houston cannot manufacture a late comeback against a relief corps this dominant. The Astros bullpen, by contrast, sits at a 5.99 ERA, a meaningful liability in any close or deficit situation.
- Houston is 1-8 on the road and has lost 7 consecutive games. The structural ceiling for the Astros in a road environment, against this pitching staff, is limited regardless of their team OPS or offensive potential.
- The contrarian data point: Carlos Correa owns a career .364 average and 1.144 OPS across 12 plate appearances against Kirby, including a home run. If Kirby falls behind Correa in counts, that history is a real variable. It is the one spot in the Houston lineup where the BvP data flips against Seattle.
Houston Astros vs Seattle Mariners Betting Picks
Picks made April 13, 2026 at 03:55 AM ET. Odds shown reflect current market prices.
Seattle Mariners -1.5 (+112), MEDIUM con
Seattle Mariners -1.5 (+112), MEDIUM confidence. Our model projects a 0.9-run Seattle edge at 4.1 to 3.2. The case for covering the run line rests on multiple layers: Kirby's command limits baserunner traffic, Burrows' 5.62 ERA invites early-inning damage, and Seattle's 2.10 bullpen ERA removes the late-inning collapse that typically kills run-line bets. Houston's 1-8 road record means their floor in any close game is lower than their roster suggests. At +112, you are being paid more than even money on the team with structural advantages at every position. That is the right side of the number.
Under 7.5 (-116), MEDIUM confidence. Our
Under 7.5 (-116), MEDIUM confidence. Our model lands at 7.3 total runs, a directional lean that aligns with T-Mobile Park's 0.95 runs factor. Kirby's 5 BB in 20 innings limits the baserunner traffic that drives multi-run innings. Seattle's .198 team average and 3.9 runs per game cap their own output. Even if Burrows allows 3 runs through 5 innings, Houston's 5.99 bullpen ERA and Seattle's modest offense keep this game in the 6 to 7 run range. The -116 price reflects near-even market opinion on a spot where the structural evidence points clearly toward the under.
Moneyline
Moneyline: No pick. Seattle ML at -167 implies a 62.5% market probability against our model's 61.0% projection for the Mariners. The gap is under 2%, which does not justify the price. The Mariners are the clear structural favorite tonight, but paying -167 for a less than two-point edge over our model's implied probability is not value on the moneyline. Pass on both sides.
Analysis insight — no specific bet associated
George Kirby Under 5.5 strikeouts (-128)
George Kirby Under 5.5 strikeouts (-128), MEDIUM confidence. Kirby's last three starts: 4 K, 6 K, 6 K. The average across those outings sits at 5.33, barely under the line. His most recent outing, 4 K across 8.0 innings at Texas, signals a pitch-to-contact approach rather than a swing-and-miss performance. Multiple Houston hitters have shown contact-first tendencies against him: Correa with a .364 career average in 12 PA and Altuve with career contact patterns in these matchups, even if that contact has been weak. The market has this near coin-flip at -128 (56.1% implied). The slight lean is Under, given Kirby's recent tendency to work efficiently rather than punch batters out.
Jose Altuve Under 0.5 hits (+154), MEDIU
Jose Altuve Under 0.5 hits (+154), MEDIUM confidence. Altuve's career line against Kirby is stark: 19 PA, .176 average, 0.387 OPS, 0 HR. The 2024 sample of 9 PA produced a 0.000 OPS, the most damaging stretch in the matchup history. A slight 2025 recovery to 0.450 OPS across 5 PA does not override the sustained BvP suppression pattern across multiple seasons. Kirby's low-walk approach in 2026 means Altuve cannot find his way on base without hitting the ball, and he has not hit the ball productively against this pitcher across any extended sample. Market implies 39.4% probability at +154. That is value against the career data.
Randy Arozarena Over 0.5 hits (-161), ME
Randy Arozarena Over 0.5 hits (-161), MEDIUM confidence. Arozarena is Seattle's hottest bat right now. His last 28 days: 0.826 OPS. Last 7 days: 0.804 OPS. He carries a 0.845 OPS against right-handed pitching in 2026 and faces a right-hander in Burrows who owns a 5.62 ERA all spring. The career BvP sample between the two is just 3 PA, far too small to override his current form and platoon split. In a game where Seattle projects to win and score first, getting at least one hit from the lineup's most dangerous bat is not a high bar. -161 reflects the market's confidence, and the underlying data supports it.
Isaac Paredes Under 0.5 total bases (+11
Isaac Paredes Under 0.5 total bases (+114), LOW confidence. This is a supplemental, lower-confidence play. Career versus Kirby: 10 PA, .200 average, 0.400 OPS, 0 HR. The 2025 sample of 5 PA produced a 0.000 OPS, the most recent evidence in this matchup, though the sample is small. Paredes is posting a .325 slugging percentage this season, limiting his extra-base upside in general. Market prices this near even at +114 (46.7% implied), offering marginal value. Size appropriately for a LOW confidence play and treat it as a secondary angle rather than a core bet.
Yordan Alvarez to hit a home run (+360),
Yordan Alvarez to hit a home run (+360), LOW confidence. Alvarez is one of the most dangerous power bats in the game right now: .340 average, .755 slugging, 6 HR in 72 PA, with a 1.255 OPS over the last 28 days. The reason this is LOW confidence despite that profile is straightforward: Alvarez has zero home runs in 14 career plate appearances against Kirby, and T-Mobile's 0.90 HR factor creates an additional suppression layer. The argument for +360 comes from game flow. If Kirby exits early, Alvarez could square up weaker bullpen arms in high-leverage situations. This is a speculative angle on a generational power hitter, not a confident lean. Size it accordingly.
Same-Game Parlay
Same-Game Parlay: Seattle -1.5, Under 7.5, Kirby Under 5.5 K, Altuve Under 0.5 hits. The four legs connect into a single narrative. Kirby works efficiently through the Houston lineup via weak contact rather than swing-and-miss, while Altuve goes hitless in the strongest BvP suppression spot on the card. Seattle wins by multiple runs in a controlled, low-scoring game. Each leg reinforces the others. This is not a random assembly. It reflects one coherent picture of how tonight unfolds if the pitching matchup plays to form. Component contract IDs: 381869770, 381869771, 381882078, 381882246.
Analysis insight — no specific bet associated
YRFI (-111), strong lean. Kirby's first-
YRFI (-111), strong lean. Kirby's first-inning ERA is 5.63 with a 1.75 WHIP per available data. That is an alarming first-frame number for a starter with his overall profile. Seattle as the home team has scored in the first inning in 11 of 16 games this season, a 68.8% rate. Houston as the road team has seen a first-inning run in 10 of 16 games (62.5%). Both starters enter on one-game NRFI streaks, meaning the tendency to flip back is present. The market prices YRFI at -111, implying 52.6% probability. The underlying data suggests the true probability sits closer to 65 to 70 percent. That gap makes this one of the more underpriced supplemental plays on the board tonight.
Key Players
Batting AverageHOU
Yordan Alvarez
.340Batting Average
LF
Home RunsHOU
Yordan Alvarez
6Home Runs
LF
Runs Batted InHOU
Yordan Alvarez
14Runs Batted In
LF
Earned Run AverageHOU
Mike Burrows
5.62Earned Run Average
SP
WinsHOU
Mike Burrows
1Wins
SP
StrikeoutsHOU
Lance McCullers Jr.
17Strikeouts
SP
Batting AverageSEA
Brendan Donovan
.293Batting Average
2B
Home RunsSEA
Luke Raley
3Home Runs
RF
Runs Batted InSEA
Cal Raleigh
10Runs Batted In
C
Earned Run AverageSEA
Bryan Woo
1.50Earned Run Average
SP
WinsSEA
Emerson Hancock
2Wins
SP
StrikeoutsSEA
Logan Gilbert
25Strikeouts
SP
Recent Form
Houston Astros
L5-1Colorado Rockies
L9-1Colorado Rockies
L9-6Seattle Mariners
L8-7Seattle Mariners
L6-1Seattle Mariners
Seattle Mariners
L3-2Texas Rangers
L3-0Texas Rangers
W9-6Houston Astros
W8-7Houston Astros
W6-1Houston Astros
Houston Astros vs Seattle Mariners Summary
Our model projects a 4.1 to 3.2 Seattle final, producing a 7.3 projected total against a market line of 7.5. The Under and the Mariners run line at +112 are the two core bets tonight, and they both point in the same direction: a controlled game where Kirby limits traffic, Burrows allows early damage, and Seattle's 2.10 bullpen closes it out. The predicted flow has Burrows exiting after five innings having allowed 3 runs, with Seattle's offense manufacturing enough through Arozarena and Donovan to stay ahead. If that scenario plays out, both the -1.5 and the Under cash together. That is the most likely path given the pitching matchup, the park, and the road team's recent form.
The contrarian argument, that Houston's .823 team OPS and Correa's 1.144 career OPS against Kirby make the Astros a live dog at +140, is worth acknowledging. Kirby did surrender 5 ER in 3.2 innings against this lineup in May 2025, and that regression is documented. But in 2026, Kirby has walked 5 batters in 20 innings. That is a different pitcher than the one who got shelled last spring. The contrarian case requires 2025 Kirby to show up with no supporting 2026 evidence. The YRFI at -111 rounds out the card as the most underpriced supplemental play, given Kirby's elevated first-inning WHIP and Seattle's heavy first-inning scoring rate. Play the core spots at moderate size, add the YRFI, and let the pitching tell the story.
Head-to-Head History
Season SeriesSEA leads series 3-0
| Date | Matchup | Result |
|---|---|---|
| Apr 11, 2026 | HOU @ SEA | SEASEA 9-6 |
| Apr 12, 2026 | HOU @ SEA | SEASEA 8-7 |
| Apr 12, 2026 | HOU @ SEA | SEASEA 6-1 |
Compare odds for HOU @ SEA
Frequently Asked Questions
