Ricky Pearsall injury update: 49ers WR suffers knee injury vs. JaguarsShow Caption Hide Caption Super Bowl MVP Nick Foles gives advice to backup QB's in the league Super Bowl MVP Nick Foles shares advice to today’s backup quarterbacks on what it takes to be successful when your number is called. Pearsall suffered a knee injury in the third quarter of the 49ers' Week 4 game against the Jacksonville Jaguars. It isn't clear whether the knee injury was separate from or related to the knee malady that limited Pearsall in practice ahead of the team's Week 4 game. Pearsall wasn't the only 49ers receiver to get banged up against the Jaguars. 49ers WR depth chartThe 49ers dressed five receivers for Sunday's game.