Kelvin Grady walked outside Michigan Stadium on Monday afternoon, looking down at his phone.

The junior slot receiver on the Michigan football team needed to do something he does often - when he walks to class, before he goes to bed, before he eats - he Tweets.

And his Twitter fascination also landed him an interview with "College GameDay" on ESPN.

Kelvin Grady

“That’s an amazing experience,” Grady said after being interviewed by ESPN on Monday. “It was fun. You know how you watch the interviews and like you see the lights are dim, and I could see the ESPN background and stuff.”

Grady said he was interviewed for an upcoming story on Twitter and other social networking tools.

Twitter, with its 140-character, rapid-fire updates, is a way for college football players to communicate with fans and friends. Ohio State quarterback Terrelle Pryor (@TPeezy2) does it and Kentucky do-everything star Randall Cobb (@rcobb18) called out fans after the Wildcats’ upset of South Carolina on the social networking tool. Boise State coach Chris Petersen banned his players from Tweeting in-season and Miami quarterback Jacory Harris deleted his account after receiving a racist message following a loss to Ohio State this year.

There can be fake accounts, too, as someone tried to pretend to be Michigan quarterback Denard Robinson, but the school’s sports information department said the account didn’t belong to the sophomore.

Grady (@Mr_KelGrady19) is among a number of Michigan football and basketball players who frequently Tweet, including injured cornerback Troy Woolfolk (@TWoolf29), offensive lineman Elliott Mealer (@el_mealer), wide receiver Darryl Stonum (@CornellStone22) and freshman basketball player Evan Smotrycz (@EvanMSmotrycz).

And it landed the slot receiver, who converted from basketball to football a season ago, on the premier college football show in the country.

“It’s just all in fun,” Grady said. “It’s an opportunity to be on 'College GameDay.' ”

Michael Rothstein covers University of Michigan basketball for AnnArbor.com. He can be reached at (734) 623-2558, by e-mail at michaelrothstein@annarbor.com or follow along on Twitter @mikerothstein