2021 was a wild year both on and off the field. Outside of the Sounder season, a global pandemic raged on, forcing limited attendance and throwing complete chaos into training, travel, and professional sports in general. Throughout last year, I continued to rate each player for every match. This series of articles will present a recap of Realio’s Ratings for 2021, with players ranked in reverse order from 29 to 1. The ranking is from all MLS matches they played in this season, and I’ve included thoughts on each player going forward. I watch and rewatch the games individually to rate players, and this compendium is meant to summarize an entire season of tabulating this data on a per-game basis.