Shane Lowry shot a third-round 71 to drop back to three under at the FedEx St Jude Championship in Memphis.

After a steady opening two days in the first tournament of this season's FedEx Cup play-offs, which had seen him record back-to-back 68s on the TPC Southwind course, the Offaly man's one-over round prevented him from making more progress and leaves him well adrift of the leaders.

JJ Spaun claimed the lead late on Saturday, with his 68 putting him on 13 under.

Austria's Sepp Straka, whose first win on the PGA Tour came when he pipped Lowry at the Honda Classic in February, shot an identical score to put himself one behind the Californian.

The Open champion Cameron Smith, Trey Mullinax and Will Zalatoris are tied for third on 11 under.


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Lowry, who was 28th in the FedEx Cup points standings ahead of the Tennesse tournament, started Saturday's round in impressive fashion with birdies on two and three to move up to six under.

But a double-bogey on the par-three fourth wiped out those gains and he followed that up by dropping another shot on the next hole.

On the back nine, he birdied 12 and 14 to regain the early momentum but another double bogey, this time on the 15th, proved detrimental again as he settled for a 71.

Rory McIlroy and Seamus Power both missed the cut on Friday.