As the San Francisco 49ers prepare for their opening game against the New York Jets on Monday Night Football, star running back Christian McCaffrey has been listed on the injury report with a calf/Achilles issue. Initially described only as a calf strain, this recent specification raises concerns given the potential severity of Achilles injuries. McCaffrey, who has a history of injuries and missed significant training camp, is expected to play but may be limited in snaps to avoid exacerbating the condition. His performance is crucial, especially following a standout season where he rushed for 1,459 yards and scored 21 touchdowns. The 49ers will likely lean on backup Jordan Mason to share the workload, ensuring McCaffrey's health throughout the season. The team's cautious approach underscores the high stakes as they aim for a Super Bowl return.