USL Championship

The USL Championship (USLC) is a men's professional soccer league in the second tier of the United States league system. It is organized by the United Soccer League (USL) as its premier league for men above USL League One. Operating under a franchise model, 24 teams divided between the league's Eastern and Western conferences compete in an annual round-robin regular season, lasting from spring to fall. At the end of the season, the top team overall wins the Players' Shield, while the top eight teams in each conference advance to a playoff tournament culminating in the USL Championship final, which determines the champion. The league's teams also simultaneously compete in the U.S. Open Cup and USL Cup.

Playing its first season in 2011 as USL Pro, and later the USL, the league formed from the merger of the USL's preceding two pro leagues, after a number of clubs broke away to found the North American Soccer League. It was initially sanctioned by U.S. Soccer as a third-tier league, but was later promoted to the second tier in 2017. Reserve teams of Major League Soccer (MLS) franchises also competed in the league from 2014 to the advent of MLS Next Pro in 2022. The Championship adopted its current name following the re-establishment of a second pro league in 2019. A third pro league, tentatively named USL Division One, is currently being planned to supersede the Championship as the USL's premier league.

As of the 2024 season, Colorado Springs Switchbacks FC are the current champions, while Louisville City FC and Orlando City SC have won the most championships each (2). The current Players' Shield holders are Louisville City FC, while Orlando City SC have won the most Players' Shields (3). Three former USL Championship teams – Orlando City SC, FC Cincinnati, and Nashville SC – are now MLS franchises.