Best MLB Singles Matchups — Wednesday, September 23, 2026
Top singles spot: Konnor Griffin
Konnor Griffin (PIT) tops the board at 100, facing LHP Matthew Liberatore. The righty is lining singles at .205 1B/PA against lefties this year — and .278 over the last two weeks, an excellent bat that turns into a single in about 18% of his trips. And Matthew Liberatore has been getting picked apart by lefties lately — .258 singles per batter faced. The bullpen behind him is roughly average to that side. He's hitting in a spot worth about 4.7 trips, so the volume's there. He's just .000 in 3 career PA against Matthew Liberatore, but that's a tiny sample and the matchup says regression. It all sets up in a neutral park.
The rest of the top of the board
- Otto Lopez (MIA) (92) vs RHP Kevin Gausman: an excellent bat at .185 into an arm getting picked apart by the same side (.227).
- Alejandro Kirk (TOR) (90) vs RHP Chris Bassitt: an excellent bat at .188 into an arm fairly stingy against the same side (.136), hot bat.
- Chandler Simpson (TB) (90) vs RHP Gerrit Cole: an elite bat at .225 into an arm getting picked apart by the same side (.200).
- Nathan Lukes (TOR) (89) vs RHP Chris Bassitt: an excellent bat at .184 into an arm getting picked apart by the same side (.214).
- Alejandro Kirk (TOR) (86) vs RHP the starter: an elite bat at .191 into an arm with little track record against the same side, hot bat.
- Steven Kwan (CLE) (85) vs RHP Sonny Gray: an elite bat at .190 into an arm tough to string hits off the same side (.074).
- Gabriel Moreno (AZ) (81) vs RHP Mason Adams: an excellent bat at .188 into an arm with little track record against the same side.
Platoon edges to target
- Konnor Griffin (PIT) — righty bat vs LHP, .205 against lefties this year.
- Chandler Simpson (TB) — lefty bat vs RHP, .262 against righties this year.
- Nathan Lukes (TOR) — lefty bat vs RHP, .207 against righties this year.
- Steven Kwan (CLE) — lefty bat vs RHP, .208 against righties this year.
- TJ Rumfield (COL) — lefty bat vs RHP, .188 against righties this year.
Hot bats and bounce-back spots
Swinging hot bats: Alejandro Kirk (TOR), Alejandro Kirk (TOR), Bo Bichette (NYM), Geraldo Perdomo (AZ), Yordan Alvarez (HOU), and Jose Altuve (HOU). Cold but due to bounce back: TJ Rumfield (COL), Corey Seager (TEX), Daylen Lile (WSH), Connor Norby (COL), and Marcelo Mayer (SF).
Lineup watch
288 of today's hitters are still on projected lineups, drawn from each team's last game. Batting order drives the score, so these flip the moment official lineups post — usually about two hours before first pitch. Anyone who doesn't make the official card gets flagged "Not starting" and drops to the bottom.
How to read these singles matchups
Each score (0–100) starts with the hitter's singles per plate appearance against the hand he's facing — weighted toward the last two weeks, then the season, then a two-year baseline. Then it layers in the bullpen, his spot in the order, and park and weather. Higher means more of it points his way. It's context, not a lock — a great spot still goes 0-for-4 sometimes, and a tough one runs into one. The edge is in stacking the odds, and since we grade every board, you can see how often the top of the list delivers.