Masters Tournament -- the first of four annual majors on the PGA Tour -- is currently in the second round Friday at Augusta National golf club in Georgia. The field will be narrowed down to the top 50 golfers on the leaderboard (including ties) for the weekend in Rounds 3 and 4.

Zach Johnson shot a third-round 66 on Saturday for the 2007 Masters champion's best round ever in the tournament

Zach Johnson made six birdies during an eight-hole stretch making the turn, and despite a late bogey, he still managed to shoot 6-under 66 -- the best score by the 2007 champion in 65 career rounds at Augusta National.

There was no mishap with a practice swing in the third round of the Masters as Zach Johnson shots his personal best at the Masters.