Golf: China's Guan stumbles to 77 at Byron Nelson

IRVING, Texas (AFP) - Chinese schoolboy Guan Tianlang, who last month became the youngest golfer in Masters history, stumbled Friday to a second-round 77 at the US$6.7 million (S$8.4 million) United States (US) PGA Byron Nelson Championship.

The 14-year-old Asian prodigy, who won the Silver Cup as the low amateur at the Masters after finishing 58th at challenging Augusta National, opened with a par-70 on Thursday at the TPC Four Seasons course in suburban Dallas.

But Guan, who also made the cut last month in New Orleans and finished 71st, struggled in round two, starting on the back nine and taking a double bogey at the par-4 12th. He birdied the next hole but then took five bogeys in a row.

Guan birdied the par-4 fourth but after an errant tee shot took a double bogey at the par-4 ninth, his last hole, to finish on seven-over 147, trailing all but a handful of players with the cutline well out of reach.

"Last couple of holes on the first nine, I think I didn't play bad. Just got in the wind and I got some bad luck, but that's golf," Guan said.

"I don't think I played really bad on the back, so I calmed myself down a little bit and just got better on the (front) nine.

"I won't make the cut every time. But I think I learned more. Just didn't play my best out there today. I still learned a lot. Still have a lot more to learn."

Guan, who won the Asian Amateur Championship last year to book his historic Masters appearance, failed to qualify for the British Open and has not yet said if he will attempt to qualify for next month's US Open.

He indicated that he might have more PGA event sponsor exemption offers such as those that allowed him to play the Byron Nelson and in New Orleans.