Walker is running - up to 13th in World 

Rankings

Sony Open winner Jimmy Walker' - his fourth in the last 15 months - jumps from 17th to 13th in the Official World Golf Ranking. 
Walker has advanced eight spots, up from 21st, since the beginning of the calendar year.
The American now sits one spot behind No. 12 Martin Kaymer, who forfeited a 10-shot lead to lose the Abu Dhabi HSBC Championship.
The benefactor of Kaymer's epic collapse, unheralded 22-year-old Frenchman Gary Stal took home his first European Tour victory and vaulted 251 spots up the OWGR, from 354th to 103rd. 
Stal started 2015 all the way down at 435th but has used his win and a top-five finish at the South African Open to leap 332 places.
The only change in the top 10 saw Justin Rose hop over Sergio Garcia into sixth, thanks to a T12 finish in Abu Dhabi, while Garcia sat inactive.
Here is the rest of the OWGR Top 10:
1 Rory McIlroy, 2 Henrik Stenson, 3 Adam Scott, 4 Bubba Watson, 5 Justin Rose, 6 Sergio Garcia, 7 Jim Furyk, 8 Jason Day, 9 Jordan Spieth, 10 Rickie Fowler.