Simpson collected his fourth PGA title -- first since he won the U.S. Open in 2012, Sunday when he won the Shriners Hospitals of Children Open for Children by six strokes.
That boosts Simpson from 24th to 17th in the men's world golf rankings.
Jeong notched his second professional win but first in a European Tour event when he beat Ross Fisher on the first hole of a playoff Sunday at the ISPS Handa Perth International in Western Australia.
Jeong rockets 700 spots from 1,066th to No. 366 in the rankings.
There were no changes in the Top 10, which continues to be led by Tiger Woods. He has been on top of the rankings for the last 30 weeks and 653 weeks overall.
The men's world golf rankings Top 10 listing player's name, home country and ranking points average:
1. Tiger Woods, United States, 12.76
2. Adam Scott, Australia, 9.05
3. Phil Mickelson, United States, 8.29
4. Henrik Stenson, Sweden, 8.04
5. Justin Rose, England, 7.30
6. Rory McIlroy, Northern Ireland, 7.07
7. Steve Stricker, United States, 6.55
8. Matt Kuchar, United States, 6.51
9. Brandt Snedeker, United States, 6.13
10. Jason Dufner, United States, 5.78
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