Morikawa matched some peers with the second-best round of the day at Bay Hill to take pole position entering the final 18 holes

ORLANDO, Fla. — Shane Lowry loves the grind of a strong test and it's showing at Bay Hill. He had six birdies Friday in slightly tamer conditions for a 5-under 67, giving him a two-shot lead going into the weekend at the Arnold Palmer Invitational.

Clark finished the second round shooting one under par, and he found himself mired in controversy when he gave himself relief on the third hole when his ball landed in a pitch mark on the fairway. Fans questioned whether this was allowed, as Clark would not be allowed free relief if his ball landed in another player's pitch mark.

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Shane Lowry two ahead of Wyndham Clark, with Collin Morikawa in tied-third alongside Corey Conners; Former Bay Hill champion Rory McIlroy four behind and world No 1 Scottie Scheffler seven back; Watch

Topping the leaderboard after the second round was a relaxed Shane Lowry, who fired a five-under-par 67 to open up a two-shot lead at the halfway stage. The 37-year-old Irishman reeled off six birdies and one bogey to head into the weekend at the Bay Hill Club & Lodge on eight under through 36 holes.