Isaiah J. Downing-Imagn Images Throughout the summer in OTAs and training camp, the 90 Vikings compete for 53 coveted roster spots and another 16 on the practice squad. Last week, the franchise ended the roster spot chase of a sophomore receiver, who, on paper, looks like an absolute stud. In his first move with the team, new GM Nolan Teasley adjusted the depth of the receiver position. He signed Michael Briscoe and Trayvon Rudolph.