(CNN) -- American duo Jim Furyk and Jonathan Byrd share a one-stroke lead at the halfway stage of the Memorial tournament at Muirfield Village Golf Club.
Furyk birdied the final hole to share the lead after the second round of the Memorial tournament.
Byrd carded a solid bogey-free four-under-par 68 to move onto seven-under overall, while Furyk scattered three bogeys across his card but crucially picked up the fifth birdie of his second round at the 18th to take his place at the top of the leaderboard after a two-under 70.
Former Masters champion Mike Weir moved up into a tie for third with a second-round 69 which included six birdies and three bogey.
The Canadian was joined on six-under-par by Mark Wilson, who reached the turn in four-under but dropped two shots over his final five holes to miss out on the outright lead after being forced to settle for a second-round 70.
Japan's Ryuji Imada (69) and Matt Bettencourt (68) sit tied for fifth, a further shot off the pace, with Ernie Els (70), Davis Love III (68) and first-round leader Luke Donald (76) in a group on four-under.
During his opening round Donald reeled off eight birdies in nine holes around the turn to leap to the top of the overnight leaderboard, but his second-round four-over-par effort included just one birdie.
World number one Tiger Woods dropped down the leaderboard after carding a two-over-par 74 to join world number three Paul Casey (70) on one-under and tied for 24th.
"I'm encouraged by that," Woods told reporters. "I just need to hit my irons a little better and obviously make the short ones. I missed two or three of those today."
Although six shots off the pace, Woods and Casey will be around for the whole weekend, unlike British Open champion Padraig Harrington who missed the cut by four strokes after slumping to a five-over-par 77 to drop to eight-over-par.
World number nine Vijay Singh also missed the cut.