Dirty Work Hour 4: The KNBR Weather Center's Raf Corrall hops on the board to preview March Madness picks with Harmony.

Dirty Work Hour 4: The KNBR Weather Center's Raf Corrall hops on the board to preview March Madness picks with Harmony.

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.