Cameron Champ is the 3M Open champ after fighting off dehydration on back-nine

BLAINE, Minn. — Cameron Champ fended off dehydration and crisply putted his way to a 5-under 66 on Sunday, winning the 3M Open by two strokes for his third career victory.

The 26-year-old Champ had five birdies in a bogey-free round to finish at 15-under 269 at TPC Twin Cities. Louis Oosthuizen, Jhonattan Vegas and Charl Schwartzel tied for second.

Oosthuizen shot 66, too, in a much stronger finish than the previous weekend at the British Open, where his 54-hole lead turned into a tie for third after a fourth-round 71.

Playing six pairs ahead of Champ, Oosthuizen birdied three of the last four holes to give himself an outside chance. His approach to the 18th green almost yielded an eagle on…