MLS ranked 29th strongest league in the world, per Opta
Athletic Department Power Index: Big Ten Conference
Barca, Madrid, Liverpool: Top 10 Best Football Teams in the World Currently Based on Opta Rankings
NFL power rankings: Steelers lone undefeated team; Rams surging - Sports Illustrated
Cristiano Ronaldo's Al Nassr rank higher than Lionel Messi's Inter Miami in list of best clubs in the world
A-Leagues clubs and where they rank in world football
The Strongest Leagues in World Football
NFL Power Rankings 2021: 1-32 poll, plus the most improved offseason teams and players who benefited from the draft - ESPN
Opta Power Rankings: Highest Risers and Fallers
Why it'd be crazy to draw firm conclusions about your Premier League team right now - The Athletic