№ 01Yamamoto's xERA of 3.32 sits above his 2.52 ERA, suggesting his contact-quality results have outrun his peripherals.
№ 02Yamamoto throws 79.8% fastballs, and Mayo carries a .391 xwOBA against fastballs across 96 plate appearances this season.
№ 03Dodger Stadium plays at a 1.34 home run factor for right-handed hitters this season, helping any contact travel.
№ 04The counter is real — Mayo is hitting .196 on the season with a 0.64 OPS, and just 6 hits in 35 at-bats over his last 10 games.
№ 05The split deepens the concern, with a 0.46 OPS in 145 plate appearances against right-handed pitching this year.
§ 01The analysis
This is a price-driven swing on a hitter-pitcher fit, not a bet on Mayo's season line. Yamamoto has a 2.52 ERA across 85.7 innings, but his 3.32 xERA points to contact-quality results that have outpaced what he's actually allowing. The shape matters here too. Yamamoto throws 79.8% fastballs, and Mayo's .391 xwOBA against fastballs across 96 plate appearances is the one area of his profile that has held up. Dodger Stadium amplifies that with a 1.34 home run factor for right-handed hitters, so a barreled fastball plays. The counter cannot be ignored. Mayo is hitting .196 on the season with a 0.64 OPS, he has 6 hits in his last 35 at-bats, and his split against right-handed pitching is a 0.46 OPS in 145 plate appearances. Yamamoto has also held right-handed batters to a .186 average across 156 matchups. The bet pays at -108 on a single base, which is the threshold a fastball-heavy pitcher in a friendly park gives Mayo a real path to clear.
§ 02The call
Take Mayo over 0.5 total bases at -108. The reason is narrow and specific — Yamamoto leans on his fastball at a 79.8% rate, and the fastball is the one pitch type where Mayo's .391 xwOBA in 96 plate appearances actually plays. Add in a Dodger Stadium park that runs a 1.34 home run factor for right-handed hitters, and the bar of one base becomes reachable even from a hitter in a clear slump. The form and the platoon split are real risks, but the price covers them.
Final resultLOSSCoby Mayo OVER 0.5 Total Bases · -108 Graded Jun 21, 2026