Representatives from eight NFL teams were present for UNLV's pro day on Thursday, when 13 players worked out outdoors, where it was 72 degrees, on FieldTurf. Wide receiver (6-foot-3, 217 pounds) ran the 40-yard dash only once, doing so in 4.53 seconds. However, he suffered a slight hamstring i sue in the proce s. He had a 10-foot-1 broad jump and did the 20-yard short shuttle in 4.35 seconds. In the positional workout, Davis -- who is a big target -- caught the ball well. Offensive tackle ( Salvador Perez Jersey 6-6, 298) ran the 40 in 5.46 and 5.48 seconds. He had a 26 1/2-inch vertical jump and 9-foot broad jump. He performed 17 reps of 225 pounds on the bench pre s. Boyko did well in the positional workout, but he's described as a little stiff. Defensive lineman Josh Shirley (6-1 1/2, 234) ran the 40 in 4.53 and 4.57 seconds. He had a 38 1/2-inch vertical jump and 10-foot-2 broad jump. He did the short shuttle in 4.44 seconds and the three-cone drill in 7.44 seconds. He also performed 31 strength lifts. Shirley -- who transferred to UNLV after being a three-time letterman at Washington -- is an undersized pa s-rushing defensive lineman who might be a 3-4 outside linebacker po sibility in the pros. Cornerback Tajh Ha son (6-0 1/8, 198) ran the 40 in 4.46 and 4.49 seconds. He had a 37 1/2-inch vertical and 10-foot-9 broad jump. He did the short shuttle in 4.35 seconds and the three-cone in 7.25 seconds. He performed 21 strength lifts. Ha son had a very good workout and might have earned his way into being a low-round draft choice in the . Defensive back Mike Horsey (5-11 1/4, 194) ran the 40 in 4.5 and 4.52 seconds. He had a 32-inch vertical jump and 10-foot broad jump. Horsey is a free-agent pickup po sibility for a team following the draft. Follow Gil Brandt on Twitter _ _. Nick Pratto Jersey