Overnight leader Shubhankar stumbled in the fourth and final round and carded a three-over 74 to finish tied ninth in the $10 million event.
The 21-year-old, who held a two-stroke lead coming into Sunday's final round, bogeyed five holes on the fifth, 13th, 14th, 17th, 18th as he birdied the 12th and 16th holes for a 74 at the Club de Golf Chapultepec in Mexico.
Apart from him, seasoned golfer Anirban Lahiri dropped one place and slipped to 80th spot while Gaganjeet Bhullar remained at 154th spot.
United States' golfer Dustin Johnson continued to lead rankings with 10.50 points, while Spain's Jon Rahm fell to the third spot, reports Efe.
US Justin Thomas replaced Rahm in the second position, despite losing the WGC-Mexico Championship Sunday to Phil Mickelson, who climbed 16 spots to 18th.
US golfers Jordan Speith, Rickie Fowler and Brooks Koepka came in fourth, seventh and eighth, respectively.
England's Justin Rose came in fifth, followed by Japan's Hideki Matsuyama.
Further down the rankings, Spaniard Sergio Garcia came in 11th, while compatriot Rafael Cabrera-Bello remained the 21st.
(This story has not been edited by Social News XYZ staff and is auto-generated from a syndicated feed.)
