The San Francisco 49ers made several roster moves on Thursday as the team continues to shape its depth ahead of next week’s regular-season opener , according to NBC’s Matt Maiocco. Maiocco reported on X, formerly Twitter, that the 49ers re-signed wide receiver Russell Gage Jr. and released safety Richie Grant. The team also signed quarterback Adrian Martinez, running back Sincere McCormick and wide receiver Marquez Valdes-Scantling to the practice squad. Gage Jr., 29, returns to San Francisco after being released by the club earlier this offseason. Originally drafted by the Atlanta Falcons in the sixth round of the 2018 NFL Draft, Gage has played in 74 career games with 25 starts. Over seven