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The WinBA Index

The monthly editorial record of WinBA Score, PropBetEdge’s 0–100 WNBA winning-impact rating. Each edition is frozen at publication: its ranks and scores are the ones that were true that month, and they do not change when the live board moves.

Current edition

The WinBA Index: the WNBA’s top players for September 2026

  1. Olivia Miles 1 Olivia Miles Minnesota Lynx 87
  2. A'ja Wilson 2 A'ja Wilson Las Vegas Aces 86
  3. Angel Reese 3 Angel Reese Atlanta Dream 83
Read the September 2026 Index → Published September 21, 2026

Previous editions

  1. August 2026 The WinBA Index: the WNBA’s top players for August 2026 1. Olivia Miles 88 · 2. A'ja Wilson 85 · 3. Caitlin Clark 82 Published Sep 21, 2026
  2. July 2026 The WinBA Index: the WNBA’s top players for July 2026 1. Olivia Miles 89 · 2. A'ja Wilson 87 · 3. Natasha Howard 82 Published Sep 21, 2026
  3. June 2026 The WinBA Index: the WNBA’s top players for June 2026 1. A'ja Wilson 87 · 2. Olivia Miles 87 · 3. Natasha Howard 86 Published Sep 21, 2026

What WinBA Score measures

WinBA Score is built only from completed WNBA games: Box Impact (points plus 1.2 times rebounds plus 1.5 times assists) measured per 36 minutes against the league, the player’s win rate, the share of her production that came in wins, and her court share. It is an association-with-winning index, not a causal estimate of wins added. Read the full method →