9-18 Dirty Work Hour 1: do the 49ers need Brock Purdy to win vs Arizona? The latest on Purdy's injury status ahead of Sunday's game

9-18 Dirty Work Hour 1: do the 49ers need Brock Purdy to win vs Arizona? The latest on Purdy's injury status ahead of Sunday's game

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.