Professional Women's Soccer · Est. 2012 · New York, NY · 14 Teams
National Women's Soccer League
Season Calendar
The NWSL regular season runs from mid-March through late October, with each of the fourteen clubs playing a balanced schedule of 26 matches—home and away against every opponent. The season is structured to avoid the summer international windows when many of the league’s stars are called up for national team duty, though fixture congestion remains an ongoing challenge as CONCACAF W Champions League commitments add midweek matches for qualifying clubs.
The NWSL Championship match takes place in November, capping an eight-month campaign that tests fitness, squad depth, and tactical adaptability across the full span of American weather—from early-spring snow in the Northeast to late-summer heat in the South.
Team Format
Each NWSL roster consists of up to 30 players, with a game-day roster of 20. The league operates under a salary cap system designed to maintain competitive balance, with allocation money, designated player slots, and international roster spots adding layers of strategic complexity to squad building. Each team is permitted a limited number of international players, and the allocation system—similar in concept to MLS’s mechanisms—allows clubs to acquire top talent through a combination of league-distributed funds and their own resources.
The NWSL Draft, held annually in January, gives clubs the opportunity to select college players and other eligible athletes, though the growing importance of youth academies and international signings has shifted the talent pipeline considerably in recent years.
Game Format
An NWSL match is played with eleven players per side on a field approximately 110 by 70 yards. The objective is to score by putting the ball into the opposing team’s goal, and matches consist of two 45-minute halves with stoppage time added at the referee’s discretion. Players may not use their hands or arms, except the goalkeeper within her own penalty area.
Each team is permitted five substitutions across three windows (plus halftime), a rule adopted from FIFA’s post-pandemic guidelines that has added a new tactical dimension to the game. The five-sub rule allows managers to reshape their teams more dramatically in the second half, and the strategic deployment of fresh legs has become a defining feature of NWSL coaching.
Key Rules
The NWSL follows the Laws of the Game as established by the International Football Association Board (IFAB), with minor league-specific modifications. Fouls in the penalty area result in penalty kicks from twelve yards. Yellow cards serve as cautions—two yellows in a single match, or a straight red card, result in ejection and a subsequent suspension. Accumulated yellow cards across the season trigger automatic one-game suspensions at defined thresholds.
The offside rule prevents attackers from gaining an unfair positional advantage, requiring them to be level with or behind the second-to-last defender when the ball is played forward. VAR (Video Assistant Referee) is not universally deployed across all NWSL venues, though the league has been expanding its use of video review technology for key match-changing decisions.
Playoff Format
The top eight teams qualify for the NWSL Playoffs at the conclusion of the regular season. The bracket begins with quarterfinal matches—single-elimination games hosted by the higher-seeded team—followed by semifinal rounds under the same format. The two semifinal winners advance to the NWSL Championship, a single match held at a predetermined neutral site.
The playoff structure rewards regular-season excellence through home-field advantage in the early rounds, but the single-elimination format ensures that any team capable of reaching the postseason has a genuine shot at lifting the trophy. The Championship match itself has produced some of the most dramatic moments in the league’s history, from last-minute winners to penalty shootout heartbreak.