Seamus Power dropped further down the standings at the St Jude Classic after a third round of 70 left him nine shots behind co-leaders Dustin Johnson and Andrew Putnam.
Bogeys on 17 and 18 proved costly for the Irish player and he now sits on six-under. Shane Lowry carded a 68 to lie on three-under, while Padraig Harrington is one-over after his round of 71.
Johnson's hopes of reclaiming the world number one spot remain on track after shooting a third round of 65 to keep hold of the lead.
Another 54-hole co-lead for @DJohnsonPGA.
— PGA TOUR (@PGATOUR) June 10, 2018
Check out his stellar third round in less than 🖐 minutes. pic.twitter.com/GqWYq3Z6vR
The American, who will retake the ranking ahead of next week's US Open if he posts victory in Memphis, fired six birdies - four on the back nine - and just one bogey to finish on 15-under overall.
He was forced to share his spot at the top of the leaderboard, however, after compatriot Andrew Putnam carded a superb 6-under 64 for the second round in a row.
His bogey-free round featured six birdies, including a 22-foot birdie putt on the par-4 12th.
The pair sit five shots ahead of third-placed Stewart Cink, whose round of 64 included a hole-in-one on the par-3 8th.
Richy Werenski and Wesley Bryan are a shot further back.
