Every player always has something to prove, but some have quite a lot on the line.

With the end of the regular season on Sept. 28 in sight, many players are under considerable pressure. Some must lead the charge in propelling their teams to the postseason, while others are simply trying to end personal down years on a positive note. And there are quite a few young players looking to find -- or maintain -- early-career success in the big leagues.

Who has the most at stake as September gets into full swing? With the help of MLB.com's 30 beat writers, here's one player on each team with the most to prove down the stretch in 2025.

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American League East

Blue Jays: OF Anthony Santander

Toronto’s biggest off

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