Séamus Power is five shots off the lead, held by South Korea's Sung Kang, after the opening round of the Shriners Children's Open in Nevada.
The Waterford golfer, who missed the cut at last week's Sanderson Farms Championship, carded seven birdies but will be disappointed with bogeys at five and 17. He signed for a 66 to leave him on five-under
Graeme McDowell was among the later starters. Beginning on the tenth hole, he opened with a bogey but made that back on the 13th. He moved to one-under after 12 and finished on that mark following another bogey and then a birdie at the final hole.
Kang, who hasn't won on Tour since the Byron Classic in 2019, delivered an impressive ten-under-par round of 61. The only blemish was a bogey on the third hole, but an eagle on the ninth along with nine birdies elsewhere, sees him lead the field by two shots from compatriot Sungjae Im and the American pair of Chad Ramey and Charley Hoffman.
Master winner Hideki Matsuyama is four off the lead after a 65.