AUGUSTA, Ga. — John Peterson, a Fort Worth Paschal graduate and former NCAA champion at LSU, opened with 12 consecutive pars en route to a 1-under-par 71 in his Masters on Thursday.Peterson three-putted the 17th hole for his only bogey, and is tied for 23rd.The 23-year-old Peterson earned his spot in the Masters field by finishing tied for fourth at the 2012 U.S. Open.Peterson teed off at 8 a.m. Eastern in the first group of the day. The tournament began with ceremonial shots from three of golf’s greatest players — 83-year-old Arnold Palmer, 77-year-old Gary Player and 73-year-old Jack Nicklaus.Peterson, 1988 Masters champion Sandy Lyle and amateur Nathan Smith followed the former champions to the tee under gray skies.The other guyMarc Leishman, who carded seven birdies in grabbing a share of the first-round lead with Sergio Garcia, said he did a little too much sightseeing at his first Masters in 2010 and missed the cut.“I was a bit of a deer in the headlights,” the Australian said, according to The Philadelphia Inquirer. “I found myself looking around a little bit too much and not concentrating on getting the ball in the hole, which is what you need to do.“I hit it in a lot of bad spots and I think I learned a lot from doing that. That’s helped me this week so far.”Jenkins on the sceneAfter Marc Leishman caught David Lynn to tie for the early lead, Dan Jenkins, of Golf Digest and Fort Worth, tweeted: “What a coincidence: Lynn & Leishman, where I have my shirts made, currently share the lead in the Masters.”Hole in oneJamie Donaldson, a first-time Masters participant, made a pretty big impression by carding a hole in one at the par-3 sixth hole. The 37-year-old European Tour player jarred a 7-iron from 177 yards out, and went on to finish with a 74.“You’re staring down that hole and the green is like there are dead elephants buried everywhere,” he said in a report from The Philadelphia Inquirer. “The [back right] pin is in the hardest pin placement so you just have to take the shot on. I went straight at it and the shot came off exactly as I wanted it to, and it went in.”Key statFred Couples’ round of 68 marked the fifth time he’s shot in the 60s at the Masters since turning 50.