(Reuters) - Americans Justin Thomas and Phil Mickelson were headed for a playoff at the WGC-Mexico Championship after finishing regulation tied at 16-under-par 268 on Sunday.


Thomas eagled the last hole to complete a seven-under 64 before Mickelson shot 66 to force the playoff at Club de Golf Chapultepec in Mexico City.


(Reporting by Gene Cherry in Salvo, North Carolina, editing by Ed Osmond)