Phil Mickelson goes on back-nine tear for two-shot lead in Furyk and Friends, thinks he can do better

Here’s something scary: Phil Mickelson, at 11-under-par 133 through two rounds of the PGA Tour Champions Constellation Furyk & Friends, thinks he’s got a lot more in the tank than his two opening rounds of 66 on Friday and 67 on Saturday at the Timuquana Country Club.

“I felt like I played well, the scores were fine, but I feel like I have a really low one in me,” Mickelson said, looking ahead to Sunday’s final round. “I want to go try to shoot that number.”

Mickelson took off after a pedestrian front nine and played the first six holes of the back at 5-under, with a 12-foot eagle putt at the 13th hole. He surged past three players tied at 9-under, Miguel Angel Jimenez (65, the day’s low round), Steve Flesch (66, with a closing bogey after four birdies in a six-hole span) and playing partner Matt Gogel (69).

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Tied at 8-under is Ernie Els (who turned in a blazing finish for a 67), David Toms (68) and Woody Austin (67). A group of six players at 6-under are led by U.S. Ryder Cup captain Steve Stricker (67), tournament host Jim Furyk (69) and Mike Weir (69).

At one point…