Burton and Vollertsen lead the teams of Ted Neville and Andy Latowski (67-67) and Tim Mickelson and Jeff Fujimoto (65-69) entering Friday's final round.

Four more teams are two shots back and tied for fourth place.

All told, there are seven teams within three shots of the lead entering the final round.

In the Senior Division, Mike Booker and Pat Youngs will take a two-shot lead into the final round.

The duo followed their first-round 67 with a 66 on Thursday and are up on Steven Hakes and Dan Alpha (69-66).

Ben Hargis and Dave Delich, the first-round leaders, shot 70 on Thursday and fell to third place.

The Charlie Coe Invitational, organized by Mike Timbers, is played annually to honor one of the greatest amateurs ever. Coe is remembered for winning the U.S. Amateur twice, and for captaining the Walker Cup and Americas Cup teams. His first national amateur win came in 1949, and then again in 1958. Defending his title a year later, Coe lost to Jack Nicklaus. Coe had a distinguished Masters record. An Augusta National member, he played in 19 consecutive Masters, and finished as low amateur six times. He tied Arnold Palmer for second, behind Gary Player, in the 1961 Masters. In 1998, his alma mater, the University of Oklahoma, dedicated the Charlie Coe learning Center, a state of the art teaching facility. Coe was a member at Castle Pines until he died in 2001.

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