Round 1: Haas and Waldorf lead

Jay Haas, at 59, and Duffy Waldorf, a mere 50, shared the first-round lead at Bellerive after both posted 66s on Thursday. Defending champion Roger Chapman opened with a 72. Go to Article

Rookie in name only

Duffy Waldorf is a man of many tours these days, but he looked quite comfortable in his senior major debut on Thursday. All that time on other circuits, he says, is paying off now. Go to Article

Waldorf catches Haas

Jay Haas put up a 66 early in the day at historic Bellerive, then Duffy Waldorf matched him in the afternoon. Tom Watson and Kenny Perry also started well. Follow all the action here.   Live Leaderboard

Video: Thursday highlights

The players got aggressive early at Bellerive on Thursday, and the result was some fantastic shotmaking. Check out the day's best action in our exclusive video highlight package.   Watch Video

The window is narrow

There are exceptions, of course. But for most of the players at the Senior PGA Championship this week, the pressure to win a senior major is intense because they'll have so few cracks at it.   Go to Article