Emiliano Grillo won his second PGA tour title after he edged out Adam Schenk in a double playoff hole while English golfer Harry Hall finished tied third in Texas on Sunday.
The Argentinian was two strokes clear and looked primed to take out the Charles Schwab Challenge at the Colonial Golf Course in Fort Worth.
But the 30-year-old hit a double-bogey on the last hole, providing an opening for Schenk to come back into contention, seeking to win his first PGA Tour title.
Grillo hit his drive into a small stream on the final hole which took the ball back 150 yards before stopping against a rock.
Emiliano Grillo watches as his ball floats down a concrete drainage canal on the 18th hole during the final round of the Charles Schwab Challenge (LM Otero/AP)
He decided to take a penalty stroke and landed a two-putt from 20 yards to tie with Schenk.
Schenk made par on the final hole while English PGA Tour rookie Harry Hall needed a par on the final hole to compete in the playoff.
Hall hit a bogey on the last hole after landing his drive into the water and finished tied in third with world number one American Scott Scheffler on 7-under.
Grillo struck a five-foot birdie putt to claim the title on the second playoff hole to get his first tour win in more than seven years, finishing the tournament on eight-under with 68 on his final day.
Harry Hall, of England, hits a tee shot on the second hole during the final round of the Charles Schwab Challenge golf tournament (LM Otero/AP)
Grillo’s last win was in Napa in 2015 and has had four top 10 finishes this season.
American Adam Schenk finished second place for the second time this season and is still pushing for his first tour win.
Hall, 25, was leading after the first and second day but failed to hang on to the lead with two birdies and five bogeys on Sunday.
Englishmen Aaron Rei and Justin Rose finished tied 12th on three-under.
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