№ 01Nick Martínez has posted a 4.68 xERA across 100.0 innings, telling a very different story than his surface line at Tropicana Field.
№ 02Luis Castillo brings a matching profile in the away dugout, with a 4.56 xERA over 82.7 innings that keeps him from stabilizing this game.
№ 03Martínez's 2.61 ERA sits 2.07 runs beneath his 4.68 xERA, the kind of gap that historically corrects toward the underlying contact quality.
№ 04Only 13.6% of hitters are going down on strikes against Martínez, forcing him to rely on batted-ball outcomes that his xERA says are running hot.
№ 05The risk: Martínez's last five starts show a 1.64 ERA against a 4.38 mark before that, and both offenses are averaging under 4.0 runs over the last 7 days.
§ 01The analysis
The lead here is Nick Martínez's 4.68 xERA across 100.0 innings. His 2.61 ERA is doing the talking on the broadcast, but the 2.07-run gap between the two numbers is the story: the contact he is allowing does not match the run prevention on his page, and only 13.6% of hitters are striking out against him. Across the dugout, Luis Castillo offers no real counterweight, carrying a 4.56 xERA of his own over 82.7 innings. That is the matchup on paper, two starters whose expected marks live in the mid-4s. The honest risk sits with recent form and environment. Martínez has trimmed a 4.38 ERA in his earlier starts down to 1.64 over his last five, his swinging-strike and K stuff is trending up, and Castillo's 4.79 ERA versus 4.56 xERA suggests he is closer to tightening than falling apart. Both offenses have been ice-cold, with the home side averaging 3.5 runs and the away side 4.0 over the last 7 days, Tropicana Field runs at a 0.92 environment, and Bryan Baker anchors the home pen at a 1.73 ERA.
§ 02The call
The number to build around is Martínez's 4.68 xERA over a 100.0-inning sample, mirrored by Castillo's 4.56 xERA. Two starters with mid-4s expected marks facing lineups they have not been overwhelming is the setup the over wants. The pushback is real: Martínez trending up, a 0.92 park, cold offenses at 3.5 and 4.0 runs over the last 7 days, and Baker locking down late at a 1.73 ERA. Taking Over 8 at -115 means trusting the underlying pitching profiles over the recent scoring dip.
Final resultWINOver 8 -115 · -115 Graded Jul 11, 2026