Louisville quarterback Teddy Bridgewater did not throw at the scouting combine. He chose not to. Had he thrown there, he would not have received the scrutiny he's receiving now for a pro day when he struggled. Pro days are designed to make a quarterback look good; the combine is a little less structured.
Why didn't Bridgewater throw at the combine? Here's what he said in Indianapolis in February:
“The biggest thing was just me being a perfectionist, and I just want everything to go right. Whether I’m taking a five-step drop and the guy’s not on top of his route at the time, I just want to have that chemistry with the guys. I tend to look at it from a pro standpoint. When you’re throwing in the offseason, you want to be with your guys to have that timing and that connection, so that was the biggest thing.”