Updated: July 10th, 2012 4:00pm - 4,907 views

The Minnesota Vikings' Everson Griffen didn't back down from the challenge or the smack talk. Instead, he went one-on-one with Arizona Cardinals star Larry Fitzgerald -- among others -- to prove his cover ability during a workout on the University of Minnesota campus on Tuesday. Other NFL players participating in the camp include Mickey Shuler, Michael Floyd, Ron Barthel, Tarvaris Jackson, Leon Washington, Jayme Mitchell, Matt Spaeth and Tiquan Underwood. Full Vikings coverage is at 1500ESPN.com. #Minnesota #Vikings #Everson #Griffen #covers #Larry #Fitzgerald #Arizona #Cardinals