Hovland is joined by Collin Morikawa, Tom Kim and Sepp Straka at the top of the Hero World Challenge leaderboard.
Thriston Lawrence shot an 8-under 64 to match the course record he set last year and lead at the South African Open Championship.
Grace Kim and David Micheluzzi each lead after the opening round of the mixed-event Australian Open.
Dan Bradbury completed a wire-to-wire victory at the Joburg Open on Sunday to win his first DP World Tour title.
Cameron Smith won his third Australian PGA Championship by three shots at Royal Queensland Golf Club on Sunday.
Dan Bradbury maintained his one-shot lead after Sami Valimaki of Finland double-bogeyed the 18th hole Saturday at the Joburg Open.
Cameron Smith shot 2-under 69 Saturday to take a three-stroke lead into the final round of the Australian PGA championship.
Dan Bradbury will take a one-shot clubhouse lead into the weekend after second-round play at the Joburg Open again ended early.
Jason Scrivener holds a one-shot lead over Cameron Smith at the halfway point of the Fortinet Australian PGA Championship.
Dan Bradbury equaled the course record with an 8-under 63 Thursday, despite a bogey on his last hole.