Dustin Johnson is on top of leaderboard at the halfway stage of the Northern Trust.
The American is one shot ahead of Jordan Spieth after two rounds of the PGA Tour's play-off event.
Meanwhile Tiger Woods was forced to withdrew before Friday's round because of "mild oblique strain that led to pain and stiffness".
The third round gets underway later on Saturday.
MI Emirates head to playoffs after an eight-wicket win over Gulf Giants
MI Emirates have sealed their playoff berth after a comfortable eight-wicket win over the Gulf Giants during the at the Zayed Cricket Stadium on Tuesday.
H.H. Sheikh Mansoor reviews preparations for World Sports Summit
His Highness Sheikh Mansoor bin Mohammed bin Rashid Al Maktoum, Chairman of the Dubai Sports Council, has reviewed preparations for the inaugural World Sports Summit, which will be held at Madinat Jumeirah from December 29 to 30.
Indonesia bowler enters record books with five-wicket over in T20I
Indonesia's Gede Priandana became the first bowler to claim five wickets in an over in a Twenty20 International, in a game against Cambodia in Bali on Tuesday.
Neymar undergoes successful knee surgery
Neymar has undergone successful arthroscopic surgery on his knee, his club Santos said on Monday, as the winger bids to get back to full fitness and earn a place in the Brazil squad for next year's World Cup.
Salah scores late winner as Egypt come from behind to beat Zimbabwe
Mohamed Salah has snatched a dramatic stoppage-time winner as Egypt came from behind to beat Zimbabwe 2-1 in their first game at the Africa Cup of Nations in Morocco on Monday.
