What happened: Aaron Boone announced the moderate-grade strain Saturday. Giancarlo Stanton has been sidelined since April 24 after sustaining and later aggravating a right calf strain.
Why it matters: The setback threatens to remove a middle-of-the-order bat from the Yankees' stretch run. His rehab had advanced to running bases by Aug. 11.
By the numbers: Stanton has sustained three calf strains in 2026: two to his right calf and one to his left.
What to watch: Watch for the Yankees' next update on whether Stanton can resume baseball activities before the season ends.