Americans Matt Kuchar and Vaughan Taylor were deadlocked through two sudden-death playoff holes on Sunday when darkness forced a Monday finish to the PGA Turning Stone Resort Championship.

Kuchar and Taylor each birdied their first playoff hole, the par-5 18th, and made pars at the second playoff hole, the par-5 12th, before sunset halted the playoff, which resumes Monday morning at the 13th tee.

Taylor fired a 66 Sunday and Kuchar shot 69 to each finish 72 holes on 17-under par 271, one stroke ahead of fellow Americans Tim Petrovic and Leif Olson and two ahead of American Jimmy Walker and Australian John Senden.

At the first playoff hole, Taylor backspun his approach four feet from the cup but Kuchar answered by putting himself eight feet from the pin, then sinking the clutch putt for his first birdie of the week at 18.

Taylor then hit his putt to extend the playoff to the 12th hole as twilight fell.

Kuchar knocked his approach three feet behind Taylor's ball on the green, leaving him 24 feet from the hole. Kuchar, whose only made putt beyond 20 feet this week was for eagle on the same hole, just missed and he settled for par.

Taylor had a chance to win but his birdie putt rolled just left of the cup and he tapped in, forcing both men back to the course Monday to decider which will take home a 1.08 million-dollar top prize.

The six million-dollar event, using "lift, clean and place rules" due to wet conditions, is the first of five final PGA events this season where players will fight to secure their spots in the top 125 money winners, which brings playing rights for next season.

Taylor, 33, took a bogey at the second hole in regulation but bounced back with birdies at four, five, eight and 11 and an eagle at the 12th. He stumbled with a bogey at 15 but birdies at 16 and 17 made him the man to catch.

Kuchar, 31, opened with a bogey but answered with a birdie at the second. A birdie at the fourth was followed by a bogey at five before the former US Amateur champion righted the ship with three birdies in a row starting at the eighth.

A bogey at 13 put him in jeopardy but Kuchar birdied the par-3 16th to move level with Taylor for the lead and had a chance to win on the 72nd hole of regulation.

Kuchar put his second shot at the 18th hole just 65 yards from the pin, but then chipped into a bunker. Kuchar's blast out rolled to a stop inches shy of the cup and he tapped in to force a playoff.

India's Jeev Milkha Singh and Australian Rod Pampling were among five who shared seventh on 274.