Chris DiMarco posted a 70 to join Jonathan Byrd, Zach Johnson and Pat Perez in a tie for third at 12-under-par 276. K.J. Choi and Duffy Waldorf followed at 11-under-par 277 while Jose Maria Olazabal and Frank Lickliter shared ninth place at 10-under-par 278.
This season has been a special won for Singh. He captured the PGA Championship and took over the No. 1 ranking in the world among other things, and his winning ways continued in wire-to-wire fashion at the Mystic Rock Course at Nemacolin.
I played well, said Singh. Im really looking forward to the next couple of weeks.
Singh held a two-shot lead over DiMarco to start the day and found trouble early on with a bogey at the par-three third. He countered with a birdie at the par-four fourth, however, after his approach stopped within six feet of the cup for a birdie.
The 41-year-old two-putted for a birdie at the par-five fifth and hit his second shot to 12 feet at the par-five eighth. Singh was unable to convert the eagle try, but walked away with a birdie to make the turn at 14-under.
Singh continued to take advantage of the par-fives with a birdie at the 11th. At the par-four 13th, Singh knocked his approach inside nine feet and drained the birdie putt to move to 16-under.
Singh stumbled to a bogey at the par-four fifth, but recovered with a birdie at the par-five 16th. With the tournament in his hands, Singh sealed the deal despite a bogey at the last for his eighth victory of the season and a new single season earnings record.
Youre not really thinking about it when youre out there, said Singh, who won for the 23rd time on the PGA Tour. Its just been a phenomenal season so far.
Cink, a two-time winner on the PGA Tour this year, caught fire with a birdie at the fifth and three straight birdies starting at the par-three seventh to move to 11-under.
My putter was really feeling good, said Cink. I could see the line, and I could see the ball falling on the front edge.
The 31-year-old added a birdie at the par-four 10th and made it five in a row with a birdie at the par-five 11th. He faltered with a bogey at the par-four 14th, but responded with back-to-back birdies from the par-five 16th to take second place alone.
Unfortunately, I wasted too many shots earlier in the week coming off the Ryder Cup, said Cink. But I did play really well this weekend. I dont think I can play much better than I did today. If a couple more had fallen it may have been a very different story.
Bob Burns and Matt Gogel tied for 11th place at nine-under-par 279.
John Daly was one shot further back at eight-under-par 280 along with Tim Petrovic, Billy Mayfair, Cameron Beckman, Robert Gamez, Kent Jones and Tag Ridings.