49ers' Mason Leads NFL, Suffers Sprained AC Joint

San Francisco 49ers running back Jordan Mason, currently leading the NFL in rushing yards, suffered a sprained AC joint in his left shoulder during the team's victory over the Seattle Seahawks. The injury occurred in the first half, but Mason briefly returned in the third quarter before being sidelined again. While the injury is not considered serious, further tests are planned to ensure his availability for the upcoming game against the Kansas City Chiefs. Mason's absence would be a setback for the 49ers, who are already missing key players like Christian McCaffrey and Elijah Mitchell due to injuries. Rookie Isaac Guerendo showed promise in Mason's absence, rushing for 99 yards, including a significant 76-yard run. Mason has been crucial for the 49ers, filling in for McCaffrey and leading the team with 609 rushing yards this season.