Columbia Soccer League

The Columbian Soccer League, commonly known as the CSL, is a professional association soccer league in Lower Columbia and one of the most visited soccer leagues in North America. At the top of the Lower Columbian soccer league system, the CSL is the nation's primary soccer competition. The league is contested by 20 teams and operates on a system of promotion and relegation with the Second National Columbian Division. Seasons run from February to September, with the playoffs following. Most games are played on Saturdays and Sundays, with a few games played during weekdays.

A total of 30 clubs have competed in the CSL since its founding. The Portland Timbers are the league's most successful club, having won the national championship 10 times. Other champions include Seattle Sounders FC (7 titles), Nyhaven Cruisers (6 titles) and the Vancouver Whitecaps (5 titles). The league was founded in 1968 in Kendall and the first season started in 1969. The league's structure has only changed marginally since, most notably with the introduction of the relegation system to the Second National Division in 1975.