As Week 11 unfolds in the 2025 fantasy baseball season, several bullpens are undergoing significant changes that could impact fantasy managers' strategies. The Arizona Diamondbacks have found themselves in a committee situation, with Justin Martinez and Shelby Miller sharing save opportunities. However, Martinez's recent elbow discomfort raises questions about the team's closer role.

Meanwhile, the Atlanta Braves' bullpen is in disarray, with Raisel Iglesias struggling and other options lacking clarity. Tanner Scott remains the closer for the Los Angeles Dodgers, but with the return of Kirby Yates and Michael Kopech, both pitchers could emerge as solid options if Scott falters.

The Texas Rangers have officially named Robert Garcia as their closer, while the St. Louis Cardinals face a potential shifting in their closing duties as Ryan Helsley continues to underperform. Speculation surrounds who could step into the role if Helsley's struggles continue. As these changes unfold, savvy fantasy owners should keep a close eye on these bullpens and consider making roster adjustments accordingly.