The DP World Tour and Blue Bay LPGA are also taking place
Ireland's Shane Lowry leads by a shot after round one of the Arnold Palmer Invitational on the PGA Tour in Florida.
The Offaly native is 6 under par, with Seamus Power level par and Rory McIlroy 1 over.
On the DP World Tour, Tom McKibbin is third on day two of the Jonsson Workwear Open in South Africa.
He's 13 under for the tournament after a second round of 64 - two shots behind the leader Matteo Manassero who's on 15 under.
Stephanie Meadow is in a tie for 6th after day two of the Blue Bay LPGA in China.
She's 6 under par, three shots behind the leaders.