Three late-season sleeper hitters surge for Week 21: Matt Shaw, Isaac Collins, and Jakob Marsee. Shaw has rekindled Cubs momentum with a mini hot streak that features solid plate discipline, speed on the bases, and power bursts, though the numbers are still sample-size small and regression risk looms. Collins has become Milwaukee’s unlikely driver, delivering a high-contact, speed-friendly profile that has boosted batting average and runs as the Brewers push toward the postseason. Marsee’s start with Miami has been historically hot, fueling fantasy intrigue with exceptional on-base ability and speed, even if the underlying metrics point toward some regression ahead. Collectively, these three offer varied paths to rest-of-season value, with Collins standing out for steady multi-cat production, Shaw offering speed and position flexibility with upside, and Marsee presenting a high-upside but volatile bet who could still stick in the lineup.

Shaw’s recent run (.306 over 30 days with 8 HR, 17 RBI, 14 runs, 3 SB) suggests a breakout contender, but the Cubs will need sustained consistency to erase a rough first half. Collins’s post-break surge (.352, 3 HR, 7 doubles, 3 SB in the stretch) is backed by elite chase and walk rates, making him a robust option for AVG, runs, and SB in 12-team formats. Marsee has been elite early (.377/.468/.774 through 17 games) but carries a very high BABIP and an inflated HR/FB rate, implying at least some pullback is coming; still, his ability to get on base and steal bases keeps him in the mix. Week 21 should emphasize matchup-aware starts and daily roster flexibility as these players navigate late-season workloads and roster dynamics.