Following the college season was another big test for Ya-Sin at the Senior Bowl. Only a year removed from being an FCS player, he would really be seeing the cream of the crop for a week down in Mobile, Ala. The event proved to be no problem for Ya-Sin, however.

"He was just as tenacious in Mobile this week, regularly going up against Deebo Samuel and more than holding his own against our MVP of Senior Bowl practices," Ryan Wilson of CBS Sports wrote following the Senior Bowl.

"Scouts have known about Ya-Sin since the late summer, and he quietly continued to make a name for himself until this week, when he burst onto the scene," Wilson continued. "Now there's talk that he could be a first-round pick, and while Greedy Williams remains the most athletic cornerback in this class, Ya-Sin isn't far behind."

Ya-Sin also caught the attention of Colts.com' s Andrew Walker, who made this note after watching the first day of practice:

Rock Ya-Sin out of Temple showed the ability to be a very aggressive, physical corner on Tuesday — and in all the good ways. He did get crossed up one time in a one-on-one rep where he lost the receiver, but he otherwise seemed to show solid coverage skills and hustle. He also had a play in which he poked the ball loose and would've been credited with a forced fumble in a real game setting. At 6-2, 190 pounds, Ya-Sin finished 14th in the nation in 2018 with 12 passes defensed.

With the Colts, Ya-Sin immediately becomes injected into an already-talented group of cornerbacks featuring Pierre Desir, Kenny Moore II, Quincy Wilson, Nate Hairston and Jalen Collins.