THIS GUY! Frank Caliendo does Jon Gruden's show as Jon Gruden, hilarity ensues
The segment is called "Gruden vs. Gruden QB Camp". It also features a cameo from Fresno State quarterback Derek Carr, who cannot keep a straight face through these proceedings.
You can see video of Frank Caliendo as Jon Gruden on "Jon Gruden's QB Camp" courtesy ESPN.
This is not the first time that Frank Caliendo has busted out his Jon Gruden act to kill time on ESPN shows. There has also been Jon Gruden's Pee Wee Football Camp, a Richard Sherman "30 for 30" mockumentary featuring Caliendo as Gruden (and others), and What Jon Gruden is Like When He is Not Talking About Football.
And yes, there has also been a Frank Caliendo as Mel Kiper, Jr segment that deserves watching before every NFL Draft.