NORTON, Mass. — Determined to get off to a better start, Mike Weir birdied the first four holes and one-putted his final nine greens in the Deutsche Bank Championship Friday to tie the course record at TPC Boston with a 10-under 61, the lowest round of his PGA Tour career.

Weir had a three-shot lead over a group of four players that included Vijay Singh, whose victory last week at The Barclays put him atop the standings in the PGA Tour Playoffs for the FedEx Cup.

Singh previously had the TPC Boston course record to himself, a 61 in the third round two years ago. The Fijian set the tone for a day of low scores when he ran off five birdies in a six-hole stretch for a 64.

It took Weir only 10 holes to catch him.