as we gear up for Monday Night Football between the San Francisco 49ers and the New York Jets there's plenty to unpack when it comes to the 49ers depth chart the big news is that Christian mcaffrey the reigning AP offensive player of the year will be inactive for tonight's game due to a CF injury this absence is going to shake up the 49ers backfield significantly when Jordan Mason stepping in as the starting running back while McCaffrey's absence is disappointing Mason has shown flashes of his potential in previous outings and the team will lean heavily on him to fill that Gap it's also worth noting that the 49ers are without safety to lenoa huanga who is still recovering from an ACL injury hua's absence is another blow to the defense but the 49ers have activated Tracy Walker the third from the practice squad to step in and provide some stability in the secondary this will be something to watch especially as the Jets offense led by Aaron Rogers tries to exploit this change in the defensive lineup speaking of Rogers tonight marks his much anticipated return after suffering the season ending Achilles injury early last season with the Jets aiming for a bounce back year Rogers will have his hands full facing the 49ers defensive line which is considered one of the best in the league with Nick Bosa and Jaan ha grave anchoring the front it will be fascinating to see how Rogers handles the pressure another critical aspect of the 49ers lineup is the offensive line where Dominic puny will start at Right Guard puni a third round pick has the versatility to play all five spots on the line and he'll be filling in for Spencer berford and John Feliciano his performance will be vital in protecting quarterback Brock py who's looking to start season strong with his key targets Debo Samuel and newly resigned Brandon auk despite these lineup changes the 49ers remain a formidable opponent the team has ensured they are in good shape for the season ahead locking in key players like IO can left tackle Trent Williams with new contracts both will be essential in keeping the 49ers offensive momentum strong particularly against a Jets defense that's missing Elite pass Russia Hassan de who's holding out for a new contract so as we look forward to tonight's game the depth and resilience of the 49ers roster will be tested even with some of their key players out San Francisco has built a squad that can step up and deliver when it counts stay subscribed for more videos