Oliver Fisher carded eight birdies on the opening day to take a solo one-shot lead at the Qatar Masters on Wednesday.
The Englishman's only blemish in a 7-under-par 65 was when he bogeyed the 13th hole, but he edged Rafael Cabrera-Bello of Spain by one stroke on an eventful first day at Doha Golf Club.
Ernie Els and Paul Lawrie were among 11 players tied for third at 5 under.
Fisher started in the afternoon from the 10th hole and posted a hat trick of birdies from the 16th hole before carding three more on Nos. 4, 6 and 8.
Defending champion Sergio Garcia, making his first European Tour start of the season, finished the day at 3 under.