Spieth surges into contention with 64 after rain alters course at 14 in 2nd round of Nelson

Jordan Spieth hits a tee shot on the shortened 14th hole during the second round of the Byron Nelson golf tournament, Friday, May 29, 2015, in Irving, Texas. The 14th fairway was washed over by a flash flood so the the hole was shortened to a 100-yard par 3. (AP Photo/LM Otero) (The Associated Press)

Jon Curran putts on the seventh hole during the second round of the Byron Nelson golf tournament, Friday, May 29, 2015, in Irving, Texas. (AP Photo/LM Otero) (The Associated Press)

Jordan Spieth surged into contention on a day the Masters champion isn't sure he will see again at his hometown AT&T Byron Nelson.

Spieth and every other early finisher within three shots of the lead had a birdie 2 on what was supposed to be the par-4 14th Friday. An overnight rain storm turned one of the signature holes at the saturated TPC Four Seasons into a pitch-and-putt par 3 at 105 yards.

Jon Curran was the early second-round leader at 9 under, one better than Cameron Percy with other contenders unlikely to finish after the start was delayed three hours. He shot 63 — 6 under because par became 69 for one round at least because of the rain.

Spieth shot 64 and was 6 under for the tournament.