Jordan Spieth significantly widened his margin over Jason Day for the No. 1 ranking by winnng the Hyundai Tournament of Champions last Sunday.
Spieth now averages 12.1414 points, compared to Day’s 10.7401. No. 3 Rory McIlroy is at Day’s heels, averaging 10.3141.
Spieth won for the seventh time in his career on Sunday, already good for 23rd on the active list. Monday marked his ninth straight week at No. 1 and his 15th overall, tying him with David Duval for 13th all-time.
Rickie Fowler, who finished fifth at the Tournament of Champions, moved up to No. 5 in the world, bypassing Henrik Stenson.
Just outside the top 10, Open Championship winner Zach Johnson moved up to No. 12.
On the European Tour, Brandon Stone took an enormous leap up after winning the BMW SA Open. He climbed from 249th to 118th, and is now the sixth-ranked player from South Africa.
Tiger Woods, who has not set a time table for his return to golf, fell to No. 420.