Jordan Spieth became the first teenager to win on the PGA Tour since 1931 with a play-off victory at the John Deere Classic on Sunday, while Australian Matt Jones posted another top 10 finish. American Spieth, 19, overcame defending champion and countryman Zach Johnson and Canadian David Hearn on the fifth play-off hole at the TPC Deere Run in Illinois. The trio finished at 19 under after 72 holes, with Spieth holing out from the bunker on the 18th to get into the play-off. Spieth, Hearn and Johnson produced pars on the first four play-off holes before all three missed the fairway on the fifth. Hearn and Johnson made bogeys on the par-four 18th and Spieth holed a two-foot par putt to secure victory. Spieth is the first teenager to win a PGA Tour event since Ralph Guldahl clinched the 1931 Santa Monica Open. His victory also sees him book a spot at the Open Championship, which begins on Thursday at Muirfield Golf Links in Scotland. Spieth carded a six-under 65 in his final round, while Johnson (68) and Hearn (69) were solid. Martin Flores managed a superb eight-under 63 which saw him into 18 under and a tie for fourth alongside fellow Americans Jerry Kelly and Daniel Summerhays. Summerhays starred with a nine-under 62 on Saturday which gave him a two-shot lead heading into the final round, but he holed a costly six bogeys in a 72 on Sunday. Australian Jones continued his fine form as he tied for seventh, just a week after finishing equal second at the Greenbrier Classic. Steven Bowditch was tied for 12th at 15 under, while Stuart Appleby (11 under), Rod Pampling (seven under) and Nick O&aposHern (four under) were the other Australians to make the cut.