Injuries are becoming a factor early in the 2025 MLB season, affecting key players and fantasy lineups. A.J. Puk of the Arizona Diamondbacks has been placed on the 15-day injured list due to left elbow inflammation after a solid start with four saves. Luis Arraez of the San Diego Padres suffered a concussion that will sideline him for at least a week. Meanwhile, George Kirby of the Seattle Mariners is recovering from shoulder inflammation, with a potential return in May after positive reports following his bullpen sessions. Fantasy managers will need to keep an eye on these developments as they navigate the waiver wire.