№ 01David Peterson takes the ball with a 5.14 xERA over 77.3 innings, the softer side of a matchup that already tilts toward offense at Camden Yards.
№ 02Peterson's last five starts trend the wrong way, a 6.30 ERA in the earlier outings ballooning to 11.57 ERA in the most recent ones.
№ 03Peterson leans on fastballs 52.2% of the time and the opposing lineup owns a .359 xwOBA against heaters over 1947 plate appearances.
№ 04Trevor Rogers throws 66.0% fastballs into a lineup carrying a .352 xwOBA against fastballs across 2082 plate appearances, plus a catcher losing 0.8 called strikes per 100 taken pitches.
№ 05Jacob Webb's 3.18 ERA masks a 4.28 xERA, and the away bats have been warming up against lefties across 253 plate appearances this year.
§ 01The analysis
The lead here is David Peterson, whose 5.14 xERA across 77.3 innings already flags him as the weaker arm in this matchup, and the recent form only sharpens the picture. Over his last five starts the trajectory is pointing straight down, a 6.30 ERA in the earlier outings giving way to a 11.57 ERA in the most recent ones, with his swinging-strike and K stuff trending down and a 18.4% strikeout rate that no longer intimidates. The pitch mix compounds it: 52.2% fastballs into a lineup carrying a .359 xwOBA against fastballs over 1947 plate appearances. Trevor Rogers offers a similar profile from the other side, throwing 66.0% fastballs into a group hitting fastballs at a .352 xwOBA over 2082 plate appearances, with a 18.8% strikeout rate and a home catcher bleeding 0.8 called strikes per 100 taken pitches. The bullpen bridge is friendly too, with Jacob Webb's 4.28 xERA sitting well above his 3.18 ERA. The away lineup has also been productive against left-handed pitching across 253 plate appearances, which matters against Rogers.
§ 02The call
The risk is real. Trevor Rogers has flipped his own last five starts the other direction, trimming a 3.86 ERA in the earlier outings down to 0.79 ERA in the most recent ones. Peterson's 6.75 ERA also sits 1.61 runs above his 5.14 xERA, hinting at regression, and the away offense has averaged just 3.0 runs per game over the last 7 days while playing without Matt Shaw on the 10-day injured list. Camden's 0.98 run environment is neutral. Still, both fastball-heavy starters into fastball-friendly lineups is the shape of a 10-run day. Over 9.5 at -113.
Final resultLOSSOver 9.5 -113 · -113 Graded Jul 9, 2026