№ 01Spencer Arrighetti carries a 3.13 ERA but a 4.55 xERA across 69.0 innings, a 1.42-run gap that flags his run prevention as due to regress.
№ 02His last five starts show the slide already underway, with a 4.50 ERA in the earlier outings climbing to a 7.50 ERA in the most recent ones.
№ 03Keider Montero throws 53.3% fastballs into a Houston lineup posting a .355 xwOBA against fastballs across 1851 plate appearances this season.
№ 04Bryan King's 2.38 ERA sits well under his 3.51 xERA, so the back end of the away pen is firmer in name than true talent.
№ 05Lance Barksdale's 31.0% called-strike rate trims the zone, and Detroit is averaging 3.7 runs per game over the last 7 days going in.
§ 01The analysis
Start with the away starter. Spencer Arrighetti's 3.13 ERA looks tidy, but his 4.55 xERA across 69.0 innings tells the truer story, a 1.42-run gap that says the run prevention has been running ahead of the contact quality. The recent form lines up with the projection: over his last five starts, a 4.50 ERA in the earlier outings has climbed to a 7.50 ERA in the most recent ones. Detroit walks in averaging 3.7 runs per game over the last 7 days and gets a fastball-first look from Keider Montero, who throws 53.3% fastballs into a Houston lineup carrying a .355 xwOBA against fastballs across 1851 plate appearances. Behind the plate, Lance Barksdale has called strikes on just 31.0% of taken pitches, a tighter zone than league average. If the game goes late, Bryan King's 2.38 ERA hides a 3.51 xERA. The honest counter sits on Arrighetti's other half. He throws 47.2% breaking pitches and the opposing lineup carries a .283 xwOBA against breaking pitches across 760 plate appearances, while Houston's own offense has cooled to 4.3 runs per game over the last 7 days.
§ 02The call
The price is leaning on Arrighetti's surface ERA, but the 4.55 xERA over 69.0 innings, the move from a 4.50 ERA to a 7.50 ERA across his last five starts, and Montero's 53.3% fastball mix meeting a .355 xwOBA bat all point the same way. Add Barksdale's 31.0% called-strike zone and a Detroit lineup at 3.7 runs over the last 7 days, and there is room to clear 9 even with Bryan King waiting. Over 9 at -104 is the side, with Arrighetti's 47.2% breaking-ball usage against a .283 xwOBA group the cleanest path to a bust.
Final resultLOSSOver 9 -104 · -104 Graded Jun 27, 2026