Nick Bosa, Christian McCaffrey absent as 49ers start preseason preparations

San Francisco 49ers began their first preseason game week on August 10 with notable absences. Defensive end Nick Bosa missed his fourth consecutive session due to a condition labeled "soreness," while running back Christian McCaffrey was sidelined with "tightness." Bosa has yet to participate in team drills following an ACL tear last season, raising concerns over a potential extended absence. McCaffrey's issue is new, as this is the first practice he has missed during this year's camp. The 49ers are expected to take precautions, given both players' significance to the team as the season opener against the Los Angeles Rams approaches on September 10.

• 6:06 PMYahoo Sports — Two 49ers superstars absent to begin first preseason game week