Alvarez (back) was activated from the 15-day injured list Tuesday.

EDGE Analysis

Alvarez has been sidelined since mid-June by back tightness, but he'll rejoin San Francisco's active roster after a three-game rehab assignment with Triple-A Sacramento. The left-hander has a 5.28 ERA, 1.70 WHIP and 15:9 K:BB across 15.1 innings with one save and one hold in 21 outings this year.