Whether these are true “sleepers” or merely undervalued players depend on the depth of your league, but most have ADPs of 200+ at least.
Christian Walker, 1B, Houston Astros
Walker is coming off a down season during his first year in Houston, but an early oblique injury likely contributed to his slow first half; he returned to his usual productive self while posting a 120 wRC+ after the All-Star break. Walker’s ADP has dropped, but he’s averaged 30.5 homers and 92 RBI over the last four seasons. Walker oddly had just a 74 wRC+ with only eight of his 27 home runs at home in 2025, which seems flukey given his pull air% and Houston being HR-friendly for RHB.
While young players are more exciting, the best fantasy baseball sleepers are frequently boring old veterans, especially when coming off a down year.
Andrew Vaughn, 1B, Milwaukee Brewers
Vaughn was rejuvenated after getting traded to Milwaukee last season, hitting .308/.375/.493 with nine homers and 46 RBI over 221 at bats (64 games). His power upside is limited, but Vaughn will be a sneaky source of RBI batting toward the middle of the Brewers’ lineup. He’s not a batting average drain, and the first-round pick looked like a different hitter once freed from the White Sox. Vaughn’s ADP is approaching 300.
Royce Lewis, 3B, Minnesota Twins
Lewis is a huge wild card; he looked like a future superstar while recording a 152 wRC+ as a rookie but has battled multiple injuries and struggled at the plate over two seasons since. Lewis hit four homers and swiped nine bases in September, revealing legit upside given his past performance at the plate and newfound willingness to run. Lewis put in the work this offseason to stay healthy and rebound. He’s capable of being “this year’s Byron Buxton” if his body somehow allows.
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