hand). Limited-contact Limited-contact sports, or sports which involve, "incidental" contact, are sports for which For instance, "Basketball, by rule, is a non-contact sport." However, there is a great deal of contact in basketball, which referees tolerate at their discretion until it negatively affects the game. Players are usually not permitted to bump or knock a player down in basketball (with some exceptions such as bumping an opponent with your forearm in the paint on defense, and offensive players are allowed to back down defenders), as opposed to full-contact sports like rugby where it is perfectly legal to knock a player off the ball, or even to the ground in several ways. Excessive contact will result in penalties which provide a tactical advantage to the team which endured the foul play, or temporarily or permanently dismissing the offending player(s) from the match. Examples of limited-contact sports Non-contact Non-contact sports are sports where participants compete alternately in lanes or are physically separated such as to make it nearly impossible for them to make contact during the course of a game without committing an out-of-bounds offense or, more likely, disqualification. Examples of non-contact sports include cricket, tennis, table tennis, badminton, golf, bowling, bowls, croquet, pool, snooker, bossaball, darts, curling, tug of war, bodybuilding, swimming, diving, gymnastics, sprinting, running, track and field, bicycle race, rowing, archery, freestyle football, footgolf, fistball, tchoukball and sepak takraw. Sports injury prevention There has been an increasing medical, academic, and media focus on sports involving rapid contact in the late 20th to early 21st century and their relationship with sports injuries. Several sports governing bodies began changing their rules in order to decrease the incidence of serious injuries and avoid lawsuits. In some countries, new laws have been passed, particularly in regards to concussions. Concussions United States of America At the professional level, America's professional football league, the National Football League, began banning concussed players from re-entering the same game in which they were injured in order to reduce the risk of further injury and damage. Canada In Canada in 2018, Rowan's Law was passed after the death of a young Canadian female athlete. Rowan Stringer died in 2013 of Second Impact Syndrome, "...the result of suffering multiple concussions playing rugby three times in six days." See also Combat sport References Sports terminology