College football players are usually praised for going all-out on plays, doing so for the love of the game, USA TODAY Sports' Scooby Axson writes for this week's college football grades. But what happened in the Florida-Vanderbilt game is not only shocking – it's downright inexcusable. In the first quarter, Vanderbilt quarterback Ken Seals threw a pass to Will Sheppard (No. 14) that was caught around the Vandy 32-yard line. No big deal, right? Florida cornerback Jason Marshall Jr., (No. 3) who was beaten on the play, was still close enough to Sheppard to at least make the tackle. But Marshall stopped trying on the play, and Sheppard took off down the field with the entire Gators defense trailing him for an 85-yard touchdown. Now, (if you) look at the (television) replay. Marshall channeled his inner Giancarlo Stanton by going for a nice Saturday stroll while his other teammates put forth strong efforts to at least appear in the same TV frame with Sheppard. The play didn’t cost t...