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In team sports, a shutout (US) or clean sheet (UK) is a game in which one team prevents the other from scoring any points. While possible in most major sports, they are highly improbable in some sports, such as basketball. In football the team with most clean sheets conceded is the best defensive team.
Shutouts are usually seen as a result of effective defensive play even though a weak opposing offense may be as much to blame. Some sports credit individual players, particularly goalkeepers and starting pitchers, with shutouts and keep track of them as statistics; others do not.
A shutout in American football is uncommon but not exceptionally rare. Keeping an opponent scoreless in American football requires a team's defense to be able to consistently shut down both pass and run offenses over the course of a game. The difficulty of completing a shutout is compounded by the many ways a team can score in the game. For example, teams can attempt field goals, which have a high rate of success. The range of NFL caliber kickers makes it possible for a team with a weak offense to get close enough (within 50 yards) to the goalposts and kick a field goal. In the decade of the 2000s there were 89 shutouts in 2,544 NFL regular-season games, for an average of slightly more than one shutout every two weeks in an NFL season.
There are at least five instances in American football in which a team had been shut out throughout an entire season, and four in which a team has shut out all of their opponents in the season (the longest of these being the ten-game perfect season in which the 1933 Providence Huskies did not concede a single point).
The achievement of a shutout is much more difficult in Canadian football, where scoring and offensive movement is generally more frequent and a single point can be scored simply by punting the ball from any point on the field into the end zone.
In association football a team's defence or goalkeeper may be said to "keep a clean sheet" if they prevent their opponents from scoring any goals during an entire match. Because association football is a relatively low-scoring game, it is common for one team, or even both teams, to score no goals. A theory as to the term's origin is that sports reporters used separate pieces of paper to record the different statistical details of a game. If one team did not allow a goal, then that team's "details of goals conceded" page would appear blank, leaving a clean sheet.
In Major League Baseball, a shutout (denoted statistically as ShO or SHO) refers to the act by which a single pitcher pitches a complete game and does not allow the opposing team to score a run. If two or more pitchers combine to complete this act, no pitcher will be awarded a shutout, although the team itself can be said to have "shut out" the opposing team. The only exception to this is when a pitcher enters a game before the opposing team scores a run or makes an out and then completes the game without allowing a run to score. That pitcher is then awarded a shutout, although not a complete game.
The all-time career leader in shutouts is Walter Johnson, who pitched for the Washington Senators from 1907–1927. He accumulated 110 shutouts, which is 20 more than second placed Grover Cleveland Alexander. The most shutouts recorded in one season was 16, which was a feat accomplished by both Grover Alexander (1916) and George Bradley (1876). These records are considered among the most secure records in baseball, as pitchers today rarely earn more than one or two shutouts per season with a heavy emphasis on pitch count and relief pitching. Complete games themselves have also become rare among starting pitchers. The current active leader in shutouts is Clayton Kershaw of the Los Angeles Dodgers. Entering his ninth season, he has recorded 13 shutouts, which ties him for 463rd all time. Only four pitchers whose entire careers were in the post-1920 live-ball era threw as many as 60 career shutouts, with Warren Spahn leading those pitchers with 63.
In ice hockey, a shutout (SO) is credited to a goaltender who successfully stops the other team from scoring during the entire game. A shutout may be shared between two goaltenders, but will not be listed in either of their individual statistics. The record holder for most regular-season career shutouts in the National Hockey League is Martin Brodeur with 125 (see the all-time regular season shutout leaders). The modern-day record for a team being shut out in a season is held by the Columbus Blue Jackets at 16, during the 2006–07 season.
In the event a shutout happens while using several goaltenders, the shutout will be credited to the team who shut out the opponent; however, no single goaltender will be awarded the shutout. This has happened several times in NHL history, including:
- During the 1982–83 Washington Capitals season, the Washington Capitals and their goalies Al Jensen and Pat Riggin shared a shutout.
- December 8, 2001: the Mighty Ducks of Anaheim won 4–0 over the Minnesota Wild with Jean-Sébastien Giguère and later Steve Shields in goal.
- November 23, 2006: the Nashville Predators won 6–0 over the Vancouver Canucks with Tomáš Vokoun, who left the game injured. He was replaced by Chris Mason, who completed the game.
- December 12, 2007: the Ottawa Senators won 6–0 over the Carolina Hurricanes with Ray Emery, who left the game injured after making one save. He was replaced by Martin Gerber, who made the other 31 saves.
- December 1, 2009: the Toronto Maple Leafs won 3–0 over the Montreal Canadiens with Jonas Gustavsson, who left the game after the first period because of heart problems. He was replaced by Joey MacDonald, who played the last two periods.
- December 6, 2011: Roberto Luongo of the Vancouver Canucks stopped all his shots against the Colorado Avalanche before taking a shot to the neck; his replacement, Cory Schneider, completed the team shutout.
- April 14, 2012: the St. Louis Blues won 3–0 over the San Jose Sharks with Jaroslav Halák, who left the game after a collision with teammate Barret Jackman in the second period. He was replaced by Brian Elliott, who made 17 saves to conserve the shutout.
- February 28, 2013: The Chicago Blackhawks won 3–0 over the St. Louis Blues. Corey Crawford left the game after the first period for unspecified reasons, and was replaced by Ray Emery, who completed the second and third periods. This win also extended the Blackhawks' streak of games without a regulation loss to start a season to 20.
- March 26, 2013: The Pittsburgh Penguins won 1–0 over the Montreal Canadiens. At the start of the third period, Marc-André Fleury was replaced by Tomáš Vokoun after sustaining an unspecified injury late in the second period. Fleury stopped all of 25 shots, while Vokoun stopped all of 12.
- February 3, 2014: The Detroit Red Wings won 2–0 over the Vancouver Canucks. Jonas Gustavsson stopped all eight shots faced in the first period, but did not return for the second period due to dizziness. Jimmy Howard stopped all 16 shots in the remainder of the game.
- April 8, 2014: The Tampa Bay Lightning won 3–0 over the Toronto Maple Leafs. Ben Bishop stopped all three shots faced in the first period, but fell awkwardly making a glove save and left the game. Anders Lindbäck stopped all 25 shots in the remainder of the game. Neither goalie was given a shutout, though the team itself received that stat.
- February 22, 2015: The Vancouver Canucks won 4–0 over the New York Islanders. Ryan Miller stopped all ten shots faced in the first period. However, early in the second period, he was run into by teammate Jannik Hansen, who crashed into the net and made contact with Miller's right leg. Eddie Lack then stopped all 27 shots in the remainder of the game. Neither goalie was given a shutout, but Miller was awarded the win because the Canucks led 1-0 at the time of Miller's injury.
- December 5, 2015: The Minnesota Wild won 3–0 over the Colorado Avalanche. Devan Dubnyk stopped all six shots faced in the first period and the first five shots faced in the second period, but he suffered a mild groin strain just after making a save on Avalanche forward Jarome Iginla and eventually left the game midway through the second period. Darcy Kuemper then stopped all nine shots in the remainder of the game to conserve the shutout. Neither goaltender was credit with the shutout, but Kuemper was awarded the win because Dubnyk suffered the injury before the first goal of the game was scored.
- December 15, 2016: The New York Rangers defeated the Dallas Stars by a score of 2-0. Henrik Lundqvist stopped every shot he faced in the first period until Cody Eakin ran into Lundqvist behind the net. Lundqvist sat out for 5:31 while being checked for injury. In those five and a half minutes, backup goaltender Antti Raanta faced zero shots on goal. Lundqvist returned roughly five minutes before the end of the first period and finished the game, stopping a total of 27 shots. Neither goaltender was credited with a shutout, but Lundqvist was awarded the win due to Raanta facing zero shots on goal.
- April 1, 2017: The Philadelphia Flyers defeated the New Jersey Devils by a score of 3–0. Michal Neuvirth stopped the first four shots faced in the game, but collapsed on the ice during a stoppage in play at 7:37 of the first period and had to be taken off the ice on a stretcher. Anthony Stolarz then stopped all 23 shots in the remainder of the game. Neither goaltender was credited with the shutout, but Neuvirth was awarded the win since the Flyers led 1–0 at the time of his collapse.
The term "shutout" is not in common usage in European sport, and thus is not applied to European rugby, and there is no alternative term for the occurrence of a team achieving a no score, except to say that the team scored "nil". For example, the December 2006 Celtic League match between Munster and Connacht ended 13–0 to Munster; it was, therefore, said that Munster won "thirteen-nil".
Generally, a defensively well-disciplined team, as well as behaviourally (not giving away penalty kicks), is most likely to not give away scores. This may also occur if there is a significant difference in class between the two teams, for example, when Scotland beat Spain (who were playing in their only Rugby World Cup) 48–0 in the 1999 Rugby World Cup, or when Australia beat Namibia 142–0 in the 2003 Rugby World Cup.
- Horn, Barry. "Academy Basketball Coach Sees a Win in 100–0 loss". dallasnews.com. January 22, 2009.
- "What Does it Mean to Have a "Clean Sheet"?". wiseGEEK. Retrieved 3 February 2014.
- MLB.com (2010). "Baseball Basics: Abbreviations". Retrieved July 5, 2010.
- Sports Reference LLC (2010). "Walter Johnson at Baseball-Reference.com". Retrieved July 5, 2010.
- Sports Reference LLC (2010). "Pete Alexander at Baseball-Reference.com". Retrieved July 5, 2010.
- Sports Reference LLC (2010). "Yearly League Leaders & Records for Shutouts". Retrieved July 5, 2010.
- Sports Reference LLC (2013). "Career Leaders & Records for Shutouts". Retrieved August 27, 2013.
- http://www.tsn.ca/lack-replaces-miller-canucks-blank-islanders-1.213755. Missing or empty
- "Munster 13–0 Connacht". BBC News. December 3, 2006. Retrieved March 26, 2010.
-  Archived December 15, 2006, at the Wayback Machine.