The bracketed number to the right of the fighter indicates the fighters prior ranking. These rankings are unofficial as North Star Sports is not affiliated with, sponsored, or endorsed by the UFC.

Welterweight (May 20)Welterweight (December 19)Change
CKamaru UsmanCKamaru UsmanEVEN
1Tyron Woodley1Colby Covington+1
2Colby Covington2Gilbert Burns+4
3Jorge Masvidal3Leon Edwards+2
4Leon Edwards4Jorge Masvidal-1
5Stephen Thompson5Stephen ThompsonEVEN
6Gilbert Burns6Demian Maia+1
7Demian Maia7Tyron Woodley-6
8Michael Chiesa8Michael ChiesaEVEN
9Rafael dos Anjos9Nate Diaz+1
10Nate Diaz10Vincente Luque+2
11Geoff Neal11Neil Magny+2
12Vincente Luque12Geoff Neal-1
13Neil Magny13Belal Muhamad+3
14Li Jingliang14Anthony Pettis+2
15Robbie Lawler15Muslim Salikhov+1
   Rafael dos Anjos (Moved to LW)-7
   Li Jingliang-2
   Robbie Lawler-1