№ 01Esteury Ruiz carries a 0.90 OPS across 62 plate appearances against left-handed pitching this year, and Robert Gasser is the lefty starting.
№ 02Gasser leans on his fastball 64.8% of the time, and Ruiz has a .363 xwOBA against fastballs across 62 plate appearances this season.
№ 03Gasser's last five starts have been fading, with his most recent outings clearly worse than the earlier ones in that stretch.
№ 04Left-handers are batting .224 against Gasser this year, and his 4.96 FIP suggests his underlying work is shakier than a surface read.
№ 05The counter: Ruiz has just 3 hits in 19 at-bats over his last 10 games, so his recent form doesn't match the matchup edge.
§ 01The analysis
The reason to back Esteury Ruiz over 0.5 hits at -115 starts with how his bat plays against left-handed pitching. He carries a 0.90 OPS in 62 plate appearances versus lefties this year, and Robert Gasser is the southpaw on the mound at American Family Field. The pitch shapes reinforce it. Gasser throws 64.8% fastballs, and Ruiz has posted a .363 xwOBA against fastballs across those same 62 plate appearances. Against left-handed four-seamers specifically, Ruiz is hitting .267 over 23 plate appearances. Gasser's form supports the read too. Over his last five starts he has been fading, his most recent outings clearly worse than the earlier ones, and left-handers are hitting .224 against him on the season. His 4.96 FIP outpaces his 3.82 xERA across 46.3 innings. Season-wide, Ruiz is at .245 with a 0.84 OPS in 98 at-bats. The counter is that his short-term form is cold, with 3 hits in 19 at-bats over his last 10 games, so the price is asking the matchup edge to translate rather than build on hot contact.
§ 02The call
At -115, the case rests on a clean matchup fit. Ruiz's 0.90 OPS in 62 plate appearances against lefties lines up with Gasser starting, and the 64.8% fastball diet meets a .363 xwOBA on fastballs. Add left-handers hitting .224 against Gasser, a 4.96 FIP, and a five-start stretch that has been fading, and the shape of the day is there. The 3-for-19 slide over his last 10 games is the honest drag, but the platoon and pitch-mix edges are doing the work for a single hit.
Final resultWINEsteury Ruiz OVER 0.5 Hits · -115 Graded Jul 19, 2026