3 time Super Bowl champion for the 49ers  Brent Jones joins Dirty Work and believes McCaffrey's injury might mean the end of the 49ers season 

3 time Super Bowl champion for the 49ers  Brent Jones joins Dirty Work and believes McCaffrey's injury might mean the end of the 49ers season

Catch Dirty Work with Adam Copeland & Derek Papa every weekday from 2 p.m. - 6 p.m. on KNBR 104.5 / 680.

Catch Dirty Work with Adam Copeland &amp; Derek Papa every weekday from 2 p.m. - 6 p.m. on KNBR 104.5 / 680.

Dirty Work

Listen to Dirty Work with Adam Copeland and Derek Papa only on KNBR.

Listen to Dirty Work with Adam Copeland and Derek Papa only on KNBR.

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