Miller impressed by Thomas 63, up to a point

Jun 17, 2017; Erin, WI, USA; Justin Thomas waits on his bag on the 18th green during the third round of the U.S. Open golf tournament at Erin Hills. Mandatory Credit: Michael Madrid-USA TODAY Sports

(Reuters) - The U.S. Open has traditionally had a reputation as the toughest test in golf, but benign conditions have turned this week’s championship into a birdie-fest, much to the lament of former champion Johnny Miller.

Justin Thomas on Saturday became the fifth player to post a 63 in a U.S. Open, joining Miller, Jack Nicklaus, Tom Weiskopf and Vijay Singh but Thomas is the only one to do it on a par-72 course.