San Francisco 49ers running back Christian McCaffrey is ramping up his rehab after missing the first three games of the season due to Achilles tendinitis. Coach Kyle Shanahan indicated that McCaffrey would intensify his rehabilitation efforts starting Monday, with hopes of returning for the Week 6 game against the Seattle Seahawks.

Despite McCaffrey's absence, Jordan Mason has stepped up, ranking second in the league for rushing yards this season. However, the 49ers have struggled, losing two consecutive games after a season-opening win against the New York Jets.