The 2017 DP World Tour Championship winner Jon Rahm and his partner Ryan Palmer are tied for the lead going into the final round of the Zurich Classic.
The two are on 23 under par alongside the team of Scott Stallings and Trey Mullinax.
Meanwhile, the all-South African duo of Branden Grace and Justin Harding are a shot back.
The final round gets underway later Sunday.
Sinner beats Lehecka in Miami final to capture 'Sunshine Double'
Jannik Sinner beat Czech Jiri Lehecka 6-4 6-4 in a rain-hit Miami Open final on Sunday to become the first man to complete the coveted 'Sunshine Double' without dropping a set.
France showcase firepower and squad depth in Colombia win
Desire Doue scored twice as France showcased their attacking firepower and strength in depth with a 3-1 friendly win over Colombia on Sunday, in their final outing before coach Didier Deschamps names his World Cup squad.
Bezzecchi wins USA Grand Prix to extend perfect start to season
Aprilia's Marco Bezzecchi extended his perfect start to the year by winning the United States Grand Prix in Austin on Sunday for his third consecutive win of the year and fifth straight dating back to last season.
Max Verstappen considering F1 future
Max Verstappen said his current unhappiness has left all options on the table, including retirement once the current Formula 1 season ends.
Tottenham interim boss Tudor leaves club
Tottenham Hotspur confirmed on Sunday it had been mutually agreed head coach Igor Tudor would leave the club with immediate effect.
