Justin Rose missed out on returning to the top of the world rankings after a disastrous final round at the Indonesian Masters, the Daily Mail report.
Starting the day in a share for fourth place, the Englishman needed to finish in the top 16 to ensure he would end the year as world number one.
However, Rose, who won the event last year, could only manage a three-over card of 75, ending the week in a tie for 17th.
The 38-year-old, who claimed the Olympic title back in 2016, finished the tournament 14 strokes off eventual winner Poom Saksansin, despite making back-to-back birdies at the 17th and 18th.
At one stage, Rose, who struggled with the putter all day, was six over for the day at the 13th after making an ugly triple bogey at the 12th, taking five putts from the fringe.
The result means American Brooks Koepka will end the year as world number one, with Rose solidifying his spot as world number two in Indonesia.