Hunter Mahan has withdrawn from the RBC Canadian Open after his wife went into labour.

Mahan was the tournament leader at 13 under after 36 holes and had yet to tee off for the third round Saturday.

Mahan charged into the lead Friday with an 8-under 64 to improve on his 5-under 67 performance from the first round.

His sudden departure now puts the spotlight on John Merrick, who finished the second round two strokes back of Mahan after tying the course record with a 62 at the par-72, 7,253-yard Glen Abbey Golf Course.

Mahan's start time had initially been set for 1:30 p.m. ET before play was suspended for 80 minutes by weather.

He had been rescheduled to tee off at 2:50 but never made it to the course.