Week 4 of the 2025 MLB season brings a spotlight on players who are heating up and those who might be fantasy frauds. A notable buy is Trevor Story of the Boston Red Sox, who is hitting .318 with five homers and six steals. Despite his injury history, his early-season metrics indicate a potential breakout, making him a valuable addition for fantasy managers.

On the pitching side, Tyler Mahle of the Texas Rangers has turned heads with 25 scoreless innings, showing promise post-Tommy John surgery. Meanwhile, Seattle's Dylan Moore, despite a hot streak, is labeled a sell due to his historically low batting average. Other players worth noting include Carson Kelly and Andrew Abbott, both of whom are also trending upwards this week.