09/29/2014 10:36 EDT | Updated 11/29/2014 05:59 EST

Brooke Henderson, Canada 2nd at world junior golf event

Top-ranked amateur Brooke Henderson and Team Canada are in second place after the opening round of the World Junior Girls Golf Championship at Angus Glen in Markham, Ont.

Henderson, a 17-year old native of Smiths Falls, Ont., shot a 2-under 70 to lead Canada to an even-par score of 144 through 18 holes. 

Grace St. Germain of Ottawa shot a 2-over 74 and Naomi Ko of Victoria carded a 5-over 77.

Only the top two scores on each team are counted.

The United States took a commanding lead with an opening-round team score of 7-under 137. Megan Khang (5-under 67) and Mika Liu (2-under 70) led the way.

Finland was in third place with a 1-over 145.

Khang sits alone atop the individual leaderboard with a three-shot lead over Liu and Henderson heading into Monday’s second round.

Henderson, the world's No. 1 amateur women's golfer, finished with four birdies, including her final two holes.

“It was little bit slow to start, I wasn’t hitting the ball quite as good as I would have liked to,” she said. “Throughout the round I started to get a bit more comfortable. The last couple of holes I was playing my best golf."

Canada’s second team — comprised of Jaclyn Lee of Calgary (even-par 72), Selena Costabile of Thornhill, Ont. (6-over 78) and Alisha Lau of Richmond, B.C. (11-over 83) shot a 6-over 150, leaving them tied in eighth place.