The win, Walker's fourth in the last 15 months, jumps him from 17th to 13th in the Official World Golf Ranking. Thanks to his play over the last two weeks, Walker has advanced eight spots, up from 21st, since the beginning of the calendar year.
The benefactor of Kaymer's epic collapse, unheralded, 22-year-old Frenchman Gary Stal took home his first European Tour victory and vaulted a whopping 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.
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.