Championship is a term used in sport to refer to various forms of competition in which the aim is to decide which individual or team is the champion.

Various forms of competition can be referred to by the term championship.

In this system, a competitor has to challenge the current champion to win the championship. This form of championship is used in wrestling, boxing, and other combat sports.

The term championships (in the plural) is often used to refer to tournament competitions, either using a knockout format, such as at Wimbledon and other championships in tennis, or a mixed format with a group stage followed by knockout rounds, such as used in the European Football Championships.

A variation of the knockout format is the "best-of-X" or series format where two teams face other for a specified number of times until one team wins the majority of specified games, most of the time the remaining games are not played anymore; only then is the losing team eliminated from contention and the winning team advances to the next level. This format is predominant in American sports such as baseball, ice hockey and basketball, and on test cricket.

Joshua Harter (born February 4, 1982) is an American professional wrestler, better known by his ring name Chris Sabin. He is currently working for Total Nonstop Action Wrestling (TNA), where he teamed with Alex Shelley as The Motor City Machine Guns.

After being trained by Scott D'Amore, Sabin debuted in 2000 for Border City Wrestling, and quickly began competing for numerous other independent promotions. In 2003, Sabin joined TNA, and quickly won the TNA X Division Championship, which he later unified with the WWA International Cruiserweight Championship. In 2004, he also wrestled for Ring of Honor. In 2005, Sabin wrestled in the UK at International Showdown for The Wrestling Channel's first year anniversary at a sold out Coventry Skydome. Throughout the next few years, Sabin competed mainly in TNA's X Division, until forming the Motor City Machine Guns with Alex Shelley in mid-2007.

Throughout his career, Sabin has held numerous championships, and was the last WWA International Cruiserweight Champion. He has also held titles in Border City Wrestling and Maryland Championship Wrestling. In Pro Wrestling Zero1-Max, he held the ZERO-1 MAX International Lightweight Tag Team Championship, and in TNA he is a former four-time X Division Champion. In 2007, Sabin won the All Japan Pro Wrestling Junior League Tournament, and also won the TNA Super X Cup in 2003. He was a member of the winning team in the TNA X Cup Tournaments in 2004, and 2006.

Peter Clay "Pete" Carroll (born September 15, 1951) is the head coach and executive Vice-President of the Seattle Seahawks of the National Football League. He is a former head coach of the New York Jets, New England Patriots and the University of Southern California Trojans football team.

Carroll was born in San Francisco, California, the son of Rita C. (née Bann) and James Edward "Jim" Carroll. Two of his paternal great-grandparents were Irish immigrants, and his maternal grandparents immigrated from Austria. Carroll attended Redwood High School in Larkspur, California. After being an athlete in childhood, his lack of physical growth as a teenager caused him frustration in high school sports; weighing 110 pounds as an incoming freshman, he was required to bring a special doctor's clearance in order to go out for football. He tried hard to prove himself, a trait that carried on throughout his later life. As a result, he was a three-sport standout in football (playing quarterback, wide receiver and defensive back), basketball and baseball, earning the school's Athlete of the Year award as a senior in 1969; forty years later he was inducted into the charter class of the Redwood High School Athletic Hall of Fame in April 2009.