BOCA RATON, Fla. — Rocco Mediate birdied the 18th hole and finished with a 1-under-par 71 to win the Allianz Championship on Sunday.

He finished the tournament at 17-under 199 and became the 16th player to have a winning debut on the Champions Tour.

Mediate’s 4-foot birdie putt came after Tom Pernice Jr. missed a 5-footer at No. 18 that could have forced a playoff.

Mediate started the day with a three-shot lead, lost it by the 14th hole, but regained it when Pernice bogeyed the par-4 17th from a greenside bunker. Mediate protected that lead with a birdie on the par-5 closing hole.

Pernice, who had a final-round 70, finished tied with Bernhard Langer (68) for second place. It was Langer’s fourth top-three finish in this event in the past five years. Langer won here in 2010.

Mediate won six PGA Tour titles and also lost a memorable playoff to Tiger Woods in the 2008 U.S. Open at Torrey Pines. Mediate shot a course-record 61 in the second round Saturday.

Mark O’Meara (69) and defending champion Corey Pavin (69) were both six shots off the lead.

PGA Europe

Sterne cruises to Joburg Open title: In Johannesburg, Richard Sterne cruised to his first European Tour title in more than four years, winning the Joburg Open by seven shots.

Sterne shot a bogey-free 64 to finish with a tournament record total of 27 under at the Royal Johannesburg & Kensington golf course and win by the largest margin in tournament history.

“That was probably the best final round of my career,” Sterne said. “It was quite special to finish the way I did.”

Fellow overnight leader Trevor Fisher Jr. faltered on the final day, allowing Sterne to finish well clear of Charl Schwartzel (66) in second.

LPGA Europe, Australasia

Ko wins New Zealand Open: In Christchurch, New Zealand, top-ranked amateur Lydia Ko won the New Zealand Women’s Open for her third victory in a professional tournament.

“It was a pretty good day out there and I’m pretty excited to have my name on this trophy,” she said. “I didn’t cry at the Canadian Open (her first professional win) so I’ve got no idea why I cried here; I guess it meant more.”

“It’s our national open, so to win it means a lot. I’m not the sort of person who shows expression or feelings that much, but I guess I did here.”

The 15-year-old Korean-born New Zealander approached the last hole in a tie for the lead with American Amelia Lewis at 10-under. But Lewis, in the penultimate group, three-putted from 25 feet for bogey and Ko, playing in the last group, made par to complete a final-round 68.

Ko finished at 206 for the three-round tournament at Clearwater Golf Club. Lewis finished with a 6-under 66 for a 207 for the tournament, which is co-sanctioned by the European and Australasian women’s tours.

Cheyenne Woods, the niece of Tiger Woods, finished in a tie for 25th at 3 under while former world No. 1 Laura Davies was 51st.