Veteran pitchers like Zac Gallen and Luis Castillo are causing concern among fantasy baseball owners. Gallen has struggled with a 6.62 ERA in the last month and a 5.75 ERA for the season, leading to calls for his removal from rosters. Despite a drop in performance, Castillo's historical value suggests he might still be worth holding onto, especially if he can turn it around post-All-Star break. Other notable mentions include Camilo Doval, who's showing inconsistent form but has upside, and Kenley Jansen, whose save opportunities remain intact despite high ERA numbers.

Roman Anthony, a top prospect, is still worth holding onto due to his potential, while Corey Seager’s underlying metrics indicate he might rebound soon, making him a buy-low candidate. The episode emphasizes the importance of trading struggling players if possible, and being cautious with roster decisions as the season progresses.

No major prospect call-ups occurred recently, but there are several players to consider for your fantasy baseball roster. Andrew Painter, a highly touted pitcher for the Philadelphia Phillies, is on his way back from injury and showing promising performance in the minors with a 3.09 ERA and a solid strikeout rate. He has the potential to be impactful in the majors, especially if the Phillies' rotation experiences injuries.

Mick Abel, another pitching prospect for the Phillies, has already debuted and shown strong performance with high strikeout numbers. Meanwhile, Jack Kagleon of the Kansas City Royals is hitting incredibly well in the minors, making him a must-stash player with considerable upside.

Roman Anthony, the number one prospect in baseball, is also highlighted, showing impressive statistics in Triple-A and likely to be called up soon. His all-around abilities could add significant value to your team. Stashing these players could give you an edge in the upcoming weeks.