Demarcus Robinson was with the Rams in 2023-24. The Rams apparently forgot how fast he is.
Robinson burned his former team for a 39-yard touchdown on a perfectly thrown ball by Brock Purdy. It gave the 49ers a 10-7 lead with 4:28 left in the second quarter.
Cornerback Renardo Green set up the 49ers with an interception of Matthew Stafford on the seventh play after Rams safety Quentin Lake picked Purdy.
The 49ers went 86 yards in nine plays for their first touchdown.
Purdy is 15-of-22 for 134 yards with a touchdown and an interception. Mike Evans has five catches for 47 yards.
Stafford has completed 4 of 10 passes for 65 yards and a pick.