As the 2025 MLB season progresses into Week 15, fantasy baseball managers are keen to identify players experiencing upward or downward trends. Randy Arozarena of the Seattle Mariners is on a notable rise, boasting a .298 batting average with 13 home runs and 15 stolen bases since June. His impressive hard-hit rate and improved batted-ball profile suggest he could add even more power moving forward. Meanwhile, Eury Perez of the Miami Marlins is back from Tommy John surgery, and after a shaky start, he delivered a promising six-inning scoreless performance, indicating he may be regaining his form.

On the flip side, Mookie Betts is struggling with a .249 batting average, marking a significant decline in his offensive production, while Dylan Cease continues to battle a high walk rate despite a solid strikeout percentage. Understanding these dynamics is crucial for navigating rosters, whether to trade or to hold onto these players for their potential rebound. Keep an eye on these trends as the season unfolds!