Clemson's Simmons shows off for NFL personnel at pro day

Clemson football player Tee Higgins runs the 40-yard dash during NFL Pro Day Thursday, March 12, 2020, in Clemson, S.C. (AP Photo/Richard Shiro)

Clemson football player Tee Higgins catches a pass during NFL Pro Day Thursday, March 12, 2020, in Clemson, S.C. (AP Photo/Richard Shiro)

Clemson football player Isaiah Simmons warms up before he runs drills during NFL Pro Day Thursday, March 12, 2020, in Clemson, S.C. (AP Photo/Richard Shiro)

Clemson football player A.J. Terrell runs drills during NFL Pro Day Thursday, March 12, 2020, in Clemson, S.C. (AP Photo/Richard Shiro)

Clemson football player Isaiah Simmons jumps during a drill at NFL Pro Day Thursday, March 12, 2020, in Clemson, S.C. (AP Photo/Richard Shiro)

Clemson football player Tee Higgins catches a pass while running drills during NFL Pro Day Thursday, March 12, 2020, in Clemson, S.C. (AP Photo/Richard Shiro)

Clemson football player Tee Higgins runs the 40-yard dash during NFL Pro Day Thursday, March 12, 2020, in Clemson, S.C. (AP Photo/Richard Shiro)

Clemson football player Tee Higgins catches a pass while running drills during NFL Pro Day Thursday, March 12, 2020, in Clemson, S.C. (AP Photo/Richard Shiro)

Clemson football player Diondre Overton catches a pass while running drills during NFL Pro Day Thursday, March 12, 2020, in Clemson, S.C. (AP Photo/Richard Shiro)

Clemson football player Diondre Overton, left, and Tee Higgins run drills during NFL Pro Day Thursday, March 12, 2020, in Clemson, S.C. (AP Photo/Richard Shiro)

Clemson football player Tee Higgins lifts weights during NFL Pro Day Thursday, March 12, 2020, in Clemson, S.C. (AP Photo/Richard Shiro)

Clemson football player A.J. Terrell runs drills during NFL Pro Day Thursday, March 12, 2020, in Clemson, S.C. (AP Photo/Richard Shiro)