You might love Hard Knocks on HBO with the Oakland Raiders, but you're going to love Jon Gruden Knocking Hard on the The Frank Caliendo-Cast! Listen to Frank and his sports-minded guests, John Holmberg (morning radio host on 98KUPD www.98kupd.com in Phoenix), comedian Scott Long (@ScottComedy), actor Drew Powell (@TheDrewPowell, Gotham, Chicago P.D.), and Ken Brown (owner of Drawn To Comics in Glendale, AZ) as they share their thoughts on a very lackluster 4th episode of the 2019 season as well as their thoughts on the abrupt retirement of Indianapolis Colts QB Andrew Luck