There was a bit of a scuffle on the 49ers’ sideline in today’s loss to the Buccaneers. Wide receiver Jauan Jennings was seen arguing with head coach Kyle Shanahan, and when asked about it, Jennings directed the media to his head coach for any information. According to Vic Tafur of The Athletic, Jennings also added that he has been playing with five broken ribs. 
Seeing how injured the 49ers roster is at this moment, it’s no wonder Jennings is pushing through. The team’s reserve/non-football injury list and reserve/physically unable to perform list still each hold a player, 11 players are currently on injured reserve, and 16 more appear on the injury report. Those numbers don’t even include the loss of four-time first-team All-Pro Fred Warner, who suffered a season-ending ankle injury today. With the roster so thin throughout, any players dealing with injuries that can be played through are likely being asked to play through those injuries.
Playing through broken ribs is nothing uncommon. Multiple quarterbacks renowned for their toughness — Steve McNair, Drew Brees, Matthew Stafford, Ben Roethlisberger — reportedly played through rib injuries. Last year, it was reported that Saints running back Alvin Kamara played through a rib injury, as well. That certainly doesn’t mean it’s a pleasant or easy thing to do, though.
Whether or not the source of the animosity on the sideline stemmed from Jennings’ ribs is unknown, but the veteran receiver was clearly dealing with frustrations on and off the field today. Until his teammates start disappearing from injury reports and injured lists, Jennings will likely continue to work through those frustrations.