KAPOLEI, Hawaii -- Australia's
Winless in 65 starts in three seasons on the 50-and-over tour, the 53-year-old Senior birdied seven of the first 13 holes and closed with five pars in breezy afternoon conditions.
"It'd be nice to have a win," Senior said. "I've come close."
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Senior has five runner-up finishes on the tour, losing three playoffs. He won the 2010 Australian PGA for the last of his 27 regular international victories, and also won the 2010 Australian Senior Open.
"It was a good hitting round and I putted extremely well for the first 15 holes," Senior said. "I wish it was that easy every day. ... I drove it well, which sets up this course. You've got to be coming from the fairway on a lot of your iron shots to get a little bit of spin. ... These are exactly the same conditions I play in every day at home. The wind comes up in the afternoon."
Jay Don Blake and
Waldorf is making his second senior start. The four-time PGA Tour winner tied for eighth in the Boeing Classic.
"I felt good out there today and hit a lot of good shots," Waldorf said. "I ran into a little trouble there at the end, but all in all, it was a real nice round."