Pecko's two starts tell the same story. His August 25 outing at Yankee Stadium produced 4 walks and just 1 strikeout in 4.1 innings before he exited. He cannot locate pitches to either side of the plate reliably, and he faces a Mets lineup engineered to punish exactly that. Juan Soto returned from a 31-game IL absence and has been relentless since. Over his last 19 games, he is hitting .311/.371/.623 with 6 home runs, and his season OPS against right-handed pitching sits at 1.016. Carson Benge is posting a .954 OPS over the last 28 days. Brett Baty is at .900 OPS over his last seven. Walk-heavy pitchers do not survive lineups that thrive in hitter-friendly counts, and Pecko creates those counts every inning.

Citi Field supports Thornton's approach precisely. The park plays at a 0.96 run factor with a 0.92 home run factor, a spacious outfield that deflates power numbers and rewards soft-contact pitching. The risk is Thornton's ceiling when the formula breaks down. His August 12 outing against Atlanta produced just 2 strikeouts in 6 innings, which tells you there is no margin for error if contact starts finding gaps. Houston counters with real firepower. Yordan Alvarez is running a 1.081 OPS over his last seven days with 37 home runs on the season. Jeremy Pena is at .933 OPS over the same stretch. The Astros do not go quietly, even against superior starters.

This is the rubber game of a 1-1 series. Houston took Game 1 three to one, the Mets answered with a six to two win Saturday. Both bullpens are taxed. Kodai Senga made back-to-back appearances, multiple Mets relievers logged heavy Saturday innings, and Houston's pen carries its own recent workload into a series finale. In that environment, the starter who goes deepest wins. Thornton's command profile gives him a clear edge in that race.

• Pecko's 7.88 BB/9 (7 walks in 8.0 IP) is the worst walk rate among confirmed Sunday starters. Free passes create run-scoring traffic without needing clean hits, and the Mets lineup with Soto, Benge, and Baty is built to convert hitter-friendly counts into runs.
• Thornton's 2.88 ERA runs on contact management (6.39 K/9), not swing-and-miss ability. Citi Field's spacious outfield and 0.92 HR factor reinforce his approach, but his August 12 two-strikeout outing shows the floor is real if contact finds gaps.
• Soto's IL return has been productive. He is hitting .311/.371/.623 with 6 HR over his last 19 games, and his season OPS vs right-handed pitching is 1.016. The matchup against Pecko's command struggles is the most exploitable edge on the board.
• Both bullpens are stretched thin heading into a series finale. Senga threw consecutive days, Saturday usage was heavy on the Mets side, and Houston's pen faces heavy duty if Pecko exits in the fourth or fifth inning. The starter who goes deepest controls the margin.
• Alvarez (1.081 OPS, L7d) and Pena (.933 OPS, L7d) keep Houston dangerous despite the pitching disparity. The Astros have the offensive ceiling to rally late, particularly against a depleted Mets bullpen that is short of high-leverage options.
• The blended model projects a Mets 4.4, Astros 4.0 finish (8.4 total), landing below the 9.0 market line. The run-line cover is a cleaner play than the total because Pecko's walk rate introduces upside scoring variance that muddies the under case.

The best angle in this game is Mets -1.5 at +134. Getting paid more for the run-line cover than for the straight moneyline win is a market inefficiency worth targeting. The supporting props strengthen the same thesis: Benge Over 1.5 total bases at +128 backs the hottest Mets bat against the worst-walking starter on the slate, and Pecko Under 3.5 strikeouts at -110 plays his early-exit pattern directly. The live caveat is the Astros moneyline at -109. If Thornton struggles early and the Mets burn their already-depleted bullpen holding a thin lead, Alvarez and Pena have the firepower to make the back half of this game complicated. The contrarian take is not baseless at that price, and it is worth a small position.

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