GRAND RAPIDS, Mich. -- Brooke Henderson won the Meijer LPGA Classic on Sunday to break the Canadian record for tour victories with nine.

The 21-year-old from Smiths Falls, Ont., led wire-to-wire for her second victory in three years at Blythefield Country Club, closing with a 2-under 70 in chilly conditions to hold off Lexi Thompson, Nasa Hataoka, Su Oh and Brittany Altomare by a stroke.

Henderson broke a tie with Sandra Post for the Canadian record on the LPGA Tour and also moved ahead of George Knudson and Mike Weir for the overall country mark.

Also the Lotte Championship winner in April in Hawaii, Henderson matched the tournament record of 21 under that she set in 2017 (when the course played to a par of 71) and also was tied last year by So Yeon Ryu. Henderson opened with consecutive 64s, playing 30 holes Friday after rain delayed the start Thursday, and had a 69 on Saturday to take a two-stroke lead into the final round.

Thompson followed her course-record 62 in the third round with a 68, closing with an eagle for the second straight day. The 2015 winner at Blythefield, she was coming off a victory last week in New Jersey.

Hataoka shot 65, also making an eagle on the par-5 18th. Oh had a 66, and Altomare shot 68.

Jennifer Kupcho, four strokes behind Henderson entering the day, had a 76 to drop into a tie for 23rd at 11 under in her third professional start. The former Wake Forest star won the inaugural Augusta National Women's Amateur in April.

Hamilton's Alena Sharp had a strong tournament, finishing tied for ninth at 13-under with a final round of 72.

Calgary's Jaclyn Lee (71) finished at 2-under while Anne-Catherine Tanguay of Quebec City (74) was at 1-under.

The KPMG Women's PGA Championship, the third major championship of the year, is next week at Hazeltine in Minnesota.