Here's a blurb i found on him about his pro day:
[FONT=Verdana,Geneva,Arial,Helvetica,sans-serif][SIZE=-2]Ryan Griffin, QB (6-foot-3 7/8, 221 pounds) - Griffin ran the 40-yard dash just once, doing so in 5.15 seconds. He had a 25 1/2-inch vertical jump and an 8-foot-5 broad jump. He did the short shuttle in 4.75 seconds and the three-cone drill in 7.62 seconds. Griffin earned MVP honors in the Texas vs. The Nation All-Star Game. They said Griffin had a nice workout at Tulane’s pro day. - Gil Brandt, NFL.com[/SIZE][/FONT]
Doesn't sound overly athletic, but more of a pure pocket passer. I do like that he showed up to his pro day at 221lbs. On a lot of sites, he was listed at 6'5" @ 205lbs.