Singer has been nearly untouchable in his last two turns. Seven innings and 2 earned runs at Coors Field, then 7.1 innings and 1 earned run against Philadelphia. That's 13.1 innings of three-run ball against two lineups that can actually hit. His 2026 ERA of 4.56 over 96.2 innings is a product of a rough early stretch. The underlying rate, an 82-to-31 strikeout-to-walk ratio, reflects a starter who has found his footing. In both career starts against Seattle (2024 and 2025), Singer produced exactly 6 strikeouts, and the matchup data tells you why: Josh Naylor is hitting .107 with a 0.357 OPS in 28 career plate appearances against him, and Randy Arozarena checks in at .083 average and 0.297 OPS across 14 trips. These aren't flukes. Singer's stuff creates problems for this particular lineup.

Hancock's 2026 is a legitimate breakout, not a mirage. Three-point-17 ERA over 99.1 innings is a full 1.7 runs better than his 2025 mark, built over a meaningful sample. But the July 12 start against Tampa Bay, all 1.2 innings of it, is the one fact that demands acknowledgment. No public explanation has emerged. Whether it was mechanical, precautionary, or health-related, the question about his workload depth today is real, and it matters in a game where Seattle's bullpen is coming off a full series. If Hancock exits before the fifth, the Mariners are leaning on a depleted relief corps in a tie game or deficit.

Luke Raley is the bat to watch on the Seattle side. In 11 career plate appearances against Singer, he's hitting .500 with a 1.745 OPS and 2 home runs. That number has trended upward every season: 0.666 OPS in 2022, 1.667 in 2023, 2.334 in 2024, 2.500 in 2025. In a park that suppresses home runs, Raley has twice gone deep against Singer specifically. Cal Raleigh adds a 1.132 OPS over 18 career plate appearances against him, including a 1.667 mark in 2024 alone. Both hitters represent elite individual upside in what figures to be a low-scoring afternoon.

• Singer's last two starts span 13.1 IP and 3 ER against quality lineups. That form intersects with a Cincinnati offense that sits 35-42 vs RHP, generates 4.2 runs per game, and carries a minus-65 run differential.
• Hancock's unexplained 1.2-inning exit on July 12 is the game's biggest variable. Ten days of rest could mean full recovery or it could mean the underlying issue persists. His depth tonight determines whether the Mariners bullpen, taxed from the series, faces real exposure.
• Luke Raley (.500 AVG, 1.745 OPS, 2 HR in 11 career PA vs Singer) represents the most documented batter-vs-pitcher edge in this game. His production against Singer has increased every season since 2022.
• Josh Naylor (.107 AVG, 0.357 OPS in 28 career PA vs Singer, 0.000 OPS in both 2024 and 2025) and Randy Arozarena (.083 AVG, 0.297 OPS across 14 career PA) are the clearest suppression spots in Seattle's lineup against Singer.
• T-Mobile Park's 0.95 run factor and 0.90 home run factor, combined with two sub-.700 team OPS lineups, create a structural lean toward low scoring regardless of starter performance.
• Both clubs played night games yesterday. Both bullpens are depleted. In a rubber game with this kind of fatigue context, starter depth is the deciding factor, and Singer's recent workload gives him the edge in innings expectation over a Hancock whose ceiling is genuinely unknown today.

The sharpest angles in this game are the batter-vs-pitcher props, particularly Raley over and Naylor under. These are matchup-specific edges that exist independent of the final score. Raley's career history against Singer is not a sample-size anomaly. Five hits in 11 at-bats, including two home runs, across four seasons with improving results each year. That's a pattern. Naylor's history is the exact opposite: 28 trips against Singer with a .107 average and 0.000 OPS in his last two seasons of exposure. Pair them individually or fold them into the SGP. Either way, they represent the clearest documented advantages on this slate.

The caveat worth naming: Hancock's July 12 exit is still unexplained. If he can't get through five innings, the Mariners bullpen absorbs a heavier workload than they should in a close game, and the under 8.0 at LOW confidence becomes genuinely vulnerable. Manage your exposure to the total accordingly. For the full slate, see our MLB picks today, NRFI picks, and player props.