Soccer (NCAA) vs Soccer (NWSL) — Same Game, Different Rules

NWSL operates under the league's Concussion Management Protocol developed in conjunction with U.S. Soccer and the league medical staff.

NCAA concussion management protocol: any player with actual or suspected concussion is removed from play immediately and is subject to a graduated return-to-play assessment before being cleared. Concussion substitution permits an additional substitution beyond the normal framework.

The league applies WBGT-based heat thresholds for cooling breaks and, in extreme cases, for delays of kickoff or postponement. Air-quality-index thresholds apply for venues affected by wildfire smo...

WBGT-based heat thresholds for cooling breaks and play modifications. Mandatory water/cooling breaks at high WBGT.

Regular-season NWSL matches consist of two 45-minute halves separated by a half-time interval not to exceed 15 minutes. The referee adds additional time at the end of each half to compensate for st...

Two 45-minute halves; halftime up to 15 minutes; NCAA uses a visible countdown clock managed in coordination with the referee — historically a key NCAA-vs-FIFA distinction; the referee remains the on-field clock authority and signals stoppages; Regular season: tied matches end at full time (no ex...

Each NWSL match is officiated by a referee, two assistant referees, a fourth official, a Video Assistant Referee (VAR), and at least one assistant VAR (AVAR). The referee on the field has final on-field authority.

Effective for the 2026 and 2027 seasons, the NCAA Soccer Rules Book makes a fourth official mandatory for Division I men's and women's matches. Where video review is used, a video match official may be assigned to assist the referee with all aspec...

FIFA Quality Programme approved size 5 ball: spherical, 68-70 cm circumference, 410-450 g start-of-match weight, 0.6-1.1 atmospheres pressure (IFAB Law 2). Conference- or championship-issued match ball.

Each club designates one starting captain per match who wears a captain's armband visible to the match officials. Identification of the captain is operative for the 2026 "Only The Captain" rule (Section 7), under which only the captain may approac...

Per the 2026 and 2027 NCAA Soccer Rules Book rule changes, institutions may display up to four commercial logos on the field of play — no more than two per half. Each logo is limited to a 15-foot-by-15-foot square, must not be placed within the pe...

NWSL matches are played on a rectangular field within IFAB Law 1 limits — a length of 100 to 110 meters (110 to 120 yards) and a width of 64 to 75 meters (70 to 80 yards) — with the league's preferred dimensions favoring the upper end of the range...

Effective for the 2026 and 2027 seasons, the NCAA Soccer Rules Book makes a fourth official mandatory for Division I men's and women's matches. Where video review is used, a video match official may be assigned to assist the referee with all aspec...

Each NWSL club selects a match-day roster of up to 20 players (11 starters and 9 named substitutes). Senior roster construction, international slots, allocation money, and salary mechanics are governed by the separate NWSL Roster Rules & Regulations document and are out of scope here.

Per the 2026 and 2027 NCAA Soccer Rules Book rule changes, in matches where video review is used, each head coach is granted two video challenges per game. Coach-initiated challenges may be used at any point in the match, subject to the two-challenge limit.

The referee signals each substitution opportunity, the substitute enters at the halfway line, and the player being replaced exits across the nearest sideline within a brief permitted window. Tactical or non-medical delays during a substitution are penalty-deserving conduct under IFAB Law 12.

A goal is scored when the whole of the ball passes over the goal line, between the goalposts and under the crossbar, provided no infringement was committed previously by the team scoring the goal (IFAB Law 10). All NWSL venues use goal-line techno...

Conference standings typically use 3-1-0 points (win-draw-loss). Tiebreakers vary by conference and may include head-to-head, goal differential, goals scored, and other published criteria.

Per the 2026 and 2027 NCAA Soccer Rules Book rule changes, the determination of whether an ejection meets the criteria for Violent Behavior II, Fighting, or Referee Assault is no longer made by the on-field referee in the moment. The referee's rol...

The IFAB list of cautionable offenses applies, including unsporting behavior, dissent by word or action, persistent infringement of the Laws, delaying the restart of play, failure to respect the required distance at restarts, entering or re-enteri...

NCAA concussion management protocol: any player with actual or suspected concussion is removed from play immediately and is subject to a graduated return-to-play assessment before being cleared. Concussion substitution permits an additional substitution beyond the normal framework.

NWSL operates under the league's Concussion Management Protocol developed in conjunction with U.S. Soccer and the league medical staff.

Conference standings typically use 3-1-0 points (win-draw-loss). Tiebreakers vary by conference and may include head-to-head, goal differential, goals scored, and other published criteria.

3 points for a win, 1 point for a draw, 0 points for a loss. The full tiebreaker chain listed in Section 5 governs final standings position when teams are level on points.

FIFA Quality Programme approved size 5 ball: spherical, 68-70 cm circumference, 410-450 g start-of-match weight, 0.6-1.1 atmospheres pressure (IFAB Law 2). Conference- or championship-issued match ball.

NWSL matches use a FIFA Quality Programme approved match ball: spherical, 68–70 cm circumference, 410–450 g at the start of the match, and inflated to 0.6–1.1 atmospheres of pressure at sea level (...