England's world number three golfer,Lee Westwood has surrendered the Masters lead with a double-bogey on the 18th.
A stroke in front going into the second round at Augusta National, Westood was back to one ahead playing the last before a costly three-putt left him one behind.
Westwood shot a one-over-par 73 that also included two birdies and a bogey to finish at four under where he joins five others including Rory McIlroy. and Sergio Garcia.
Americans Jason Dufner and Fred Couples are the clubhouse leaders at five under.