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Mike Yastrzemski — an outfielder for the San Francisco Giants — is not in the starting lineup for the first game of Wednesday’s doubleheader against the New York Mets.
Quick Definition: A doubleheader is when two baseball games are played back-to-back on the same day, usually because a previous game was postponed.
The reason comes down to matchups — specifically, which hand the pitcher throws with.
| Game | Starting Pitcher | Throws | Yastrzemski’s Status |
|---|---|---|---|
| Game 1 (Afternoon) | Sean Manaea | Left-handed | Benched |
| Game 2 (Nightcap) | Christian Scott | Right-handed | Expected to Start |
ELI5: In baseball, left-handed hitters usually struggle more against left-handed pitchers — and vice versa. This is called the platoon advantage.
- The ball comes from a different angle
- It breaks (curves) away from the hitter
- It’s harder to pick up and hit squarely
Since Yastrzemski bats left-handed, and Sean Manaea pitches left-handed, the Giants’ coaching staff decided to sit him for Game 1 to avoid a tough matchup.
Here’s the plan, step by step:
Important: This is standard strategy, not an injury or slump. Yastrzemski is healthy — just being used smartly.
[!IMPORTANT]
- Yastrzemski is NOT injured — this is a tactical decision.
- Left-on-left matchups favor the pitcher.
- Doubleheaders allow flexible lineups — players can sit one game and start the next.
- He’s expected to play Game 2 against a right-handed pitcher.
Mike Yastrzemski is sitting out the first game of Wednesday’s doubleheader because the Mets are starting left-handed pitcher Sean Manaea. Since Yastrzemski also bats left-handed, the Giants are avoiding a tough matchup. He’s expected to start the second game when right-hander Christian Scott takes the mound. This is normal baseball strategy — not a sign of injury or poor performance.
No. This is a platoon decision — the coach is resting him for a better matchup in Game 2.
It’s when a hitter faces a pitcher who throws with the opposite hand. Righty vs. lefty (or lefty vs. righty) usually gives the hitter the edge.
Usually to make up a postponed game (rain, COVID, etc.) without adding extra days to the schedule.
Almost certainly not. He’ll sit Game 1, start Game 2. That’s the plan — unless something changes (injury, extra innings, etc.).
Yes! Platoon splits are a core part of modern MLB strategy. Managers constantly shuffle lineups based on pitcher handedness.