№ 01Martín Pérez's 3.27 ERA hides a 4.36 xERA, a 1.09-run gap that flags his run prevention as due for regression at Truist Park.
№ 02Pérez's last five starts trend the wrong way: a 3.48 ERA in the earlier outings has ballooned to a 7.00 ERA in the most recent ones.
№ 03The visiting lineup has been heating up against left-handed pitching across 276 plate appearances this season, arriving into a favorable matchup profile.
№ 04Nolan McLean throws 64.2% fastballs, and the opposing lineup owns a .348 xwOBA against fastballs across 1853 plate appearances this year.
№ 05Raisel Iglesias's 2.45 xERA sits above his 1.53 ERA, contact quality suggesting his late-inning suppression has outperformed his true ability.
§ 01The analysis
The number to anchor on is the gap between what Martín Pérez has done and what he's earned. His 3.27 ERA looks tidy on the surface, but the 4.36 xERA underneath it flags a 1.09-run correction waiting to arrive, and his FIP at 4.20 tells the same story. That correction may already be underway. Across his last five starts the trend line points down, with a 3.48 ERA in the earlier outings giving way to a 7.00 ERA in the most recent ones, and a 17.0% strikeout rate leaves little margin when contact starts finding grass. The visiting bats meet him warm, heating up against left-handed pitching across 276 plate appearances this season, and they're walking into a fastball-heavy look from Nolan McLean, who leans on the pitch 64.2% of the time against a lineup carrying a .348 xwOBA on fastballs over 1853 plate appearances. Truist Park's 1050 feet of elevation adds carry on any mistakes. On the back end, Raisel Iglesias's 2.45 xERA sitting above his 1.53 ERA suggests the ninth-inning firewall has been better than the underlying contact.
§ 02The call
The counter is real. McLean brings a 3.45 xERA across 95.3 innings and a 28.4% strikeout rate, which can quiet a lineup already averaging just 2.8 runs per game over the last 7 days. The home side is missing Ha-Seong Kim and Ronald Acuña Jr., and their offense has cooled to 4.0 runs per game across the same window while trending down against right-handed pitching over 507 plate appearances. Iglesias at a 1.53 ERA is a genuine door-closer. But with Pérez's underlying numbers and the fastball matchup for McLean, over 9 at +103 is the side.
Final resultWINOver 9 +103 · +103 Graded Jul 5, 2026