British Open winner Phil Mickelson admitted to some of his worst recent form after finishing the first round of the $7 million CIMB Classic in Malaysia eight strokes adrift on Thursday.

But major winner Keegan Bradley managed a seven-under 65 to stay just two strokes behind surprise leader Ryan Moore, with Spaniard Sergio Garcia a further stroke behind.

World No 3 Mickelson is tied for 21st at one-under 71, but vowed to come back strong.