Karty (groin) did not participate in practice Wednesday, Jourdan Rodrigue of The Athletic reports.
The Rams' rookie kicker tweaked his groin in last Sunday's 41-10 loss to the Cardinals. Through two contests, Karty has drilled all three of his field-goal attempts and all three of his extra-point attempts. Head coach Sean McVay said earlier in the week that he expects Karty to be available for Sunday's game against the 49ers, but the Rams signed Tanner Brown to the practice squad Tuesday as a potential replacement if Karty doesn't bounce back from the groin injury as anticipated.