Heads up poker is a form of poker that is played between only two players.
 It might be played during a larger cash game session, where the game is breaking up and only two players remain on the table, or where two players are trying to start a game and playing heads-up while waiting for other opponents.
 It is also a necessary phase in most sit-and-go (SNG) poker tournaments; the single remaining tournament winner will at some point have to face only a single opponent.
 Alternatively, heads up poker may be played on purpose, either in a cash game format, or as a SNG, where two players play a winner-take-all tournament for a fixed, previously agreed upon amount of money.
 On larger online poker rooms and during certain tournament series, one may stumble upon larger heads up tournaments, usually in the shoot-out format.
 Usually, in order to ensure the fairness of the game, all players finishing at the same level of the tournament bracket will be paid out the same amount of money, no matter what their finishing place is.
The Cowboys–Giants rivalry is a National Football League (NFL) rivalry between the Dallas Cowboys and New York Giants.
 The beginning of this rivalry is difficult to trace, but is perhaps best defined by the first game the two teams ever played back in 1960, which resulted in a 31–31 tie.
 In the early 1960s the New York Giants were beginning to wind down as an NFL powerhouse.
 After having been arguably the most dominant team in the Eastern Conference through the 1950s and early 1960s the Giants entered a period of poor play where they did not make the playoffs from 1964–81.
 While the Giants dominated the Cowboys in the first few years of the rivalry, the Cowboys picked up steam and took control from the mid-1960s to the early 1980s, winning 17 of the 20 meetings between the 2 teams in the 1970s.
 In the 1980s however the Giants struck back, and the rivalry has been relatively even handed ever since with intermittent spurts of dominance (the Giants in the late 1980s and the Cowboys in the early 1990s).
 This is a unique rivalry in American sports in that no other Texas area team is in the same division as a New York area team, or has a consistent rivalry with one, most likely due to the relatively far geographical distance between the two regions (though during the 1960s, the New York Jets were division rivals with the Houston Oilers in the American Football League East Division).
The Cavaliers–Warriors rivalry is a National Basketball Association (NBA) rivalry between the Cleveland Cavaliers and the Golden State Warriors.
 While the two teams have played each other since the Cavaliers joined the league in 1970, their rivalry did not develop until the 2014–15 season, when they met in the first of three consecutive NBA Finals series.
 The two teams have met in three straight NBA Finals, becoming the only two teams in NBA history to do so.
 Of these three series, the Warriors have won two, most recently in 2017the Cavaliers have won one, in 2016.
 The two teams feature 11 NBA All-Stars: LeBron James, Kyrie Irving, Kevin Love, Deron Williams and Kyle Korver (Cleveland), and Stephen Curry, Kevin Durant, Draymond Green, Klay Thompson, David West and Andre Iguodala (Golden State).
 Two players, Andrew Bogut and Anderson Varejão, played for both teams during this time.
Benjamin David Simmons (born 20 July 1996) is an Australian professional basketball player for the Philadelphia 76ers of the National Basketball Association (NBA).
 A versatile forward from Melbourne, Simmons attended Box Hill Senior Secondary College before moving to the United States to attend Montverde Academy in Montverde, Florida.
 He played one season of college basketball for Louisiana State University (LSU), where he was named a consensus first-team All-American and the USBWA National Freshman of the Year.
 Simmons was selected with the number one overall pick in the 2016 NBA draft by the 76ers, becoming the third Melbourne-born number one overall pick (following Andrew Bogut and Kyrie Irving) in 11 years.
 He has also represented the Australian national team.
The Messi–Ronaldo rivalry is an association football rivalry between fans of Argentine forward Lionel Messi and Portuguese forward Cristiano Ronaldo, and supposedly between the athletes themselves.
 Having won a combined nine Ballon d'Or/FIFA Ballon d'Or awards (record 5 for Messi and 4 for Ronaldo), both are widely regarded as the two best players of their generation and often as two of the best of all time.
 Both players have regularly broken the 50 goal barrier in a single season, and have scored over 500 goals each in their careers for club and country.
 They are also the only two players to score seven UEFA Champions League hat-tricks.
 Sports journalists and pundits regularly argue the individual merits of both players in an attempt to establish who they believe is the best player in modern football.
 It has been compared to past global sports rivalries such as the Muhammad Ali–Joe Frazier rivalry in boxing, the Björn Borg–John McEnroe rivalry in tennis and the Ayrton Senna–Alain Prost rivalry in Formula One motor racing.
Andrew Michael Bogut (born 28 November 1984) is an Australian professional basketball player for the Los Angeles Lakers of the National Basketball Association (NBA).
 The 7 ft center was selected by the Milwaukee Bucks with the first overall pick in the 2005 NBA draft.
 He earned All-NBA Third Team honors with the Bucks in 2010.
 He was traded to the Golden State Warriors in 2012, and was named NBA All-Defensive Second Team in 2015, when he won an NBA championship with the Warriors.
The Nebraska–Oklahoma football rivalry was an American college football rivalry between the Nebraska Cornhuskers football team of the University of Nebraska and Oklahoma Sooners football team of the University of Oklahoma.
 The rivalry continued in the Big 12 Conference until 2010, though the rivalry was more prominent when both teams were members of the former Big Eight Conference before 1996.
 The annual rivalry effectively ended when Oklahoma was lined up in the Southern division of the newly formed Big 12 to maintain its rivalry with Texas and also its recruiting hotbeds in Texas.
 As both teams won their respective divisions in 2010, they met in the 2010 Big 12 Championship Game.
 Following the 2010 season, Nebraska left the Big 12 for the Big Ten Conference.
 As a result, the 2009 meeting turned out to be the last regular-season scheduled meeting.
 Nebraska's departure left the future of the rivalry in doubt.
 The two teams have agreed to play a home-and-home non-conference series scheduled for 2021 in Norman (to celebrate the 50th anniversary of the 1971 classic) and 2022 in Lincoln.
 They added games in 2029 and 2030 as well.
The Lee–Lin rivalry is between two legendary badminton players, Datuk Wira Lee Chong Wei of Malaysia and Lin Dan of China.
 The rivalry is considered to be one of, if not, the greatest rivalry in badminton history.
 More often than not, the dominance of the two legendary shuttlers have been compared to that of tennis greats Roger Federer and Rafael Nadal in tennis.
 They have played a total of 38 times, and Lin Dan leads their rivalry 26–12.
 Lee Chong Wei and Lin Dan are by far the two of the most dominant players across three generations and many regard Lin Dan and Lee Chong Wei as the 2 greatest badminton players of all time.
 In their homeland, each hold a military rank, with Lee a Commander (Honorary) of the Royal Malaysian Navy Volunteer Reserve Unit and Lin a retired Lieutenant-Colonel in the People's Liberation Army having being promoted from the ranks of Lieutenant-Commander and Major respectively, meaning they have the same seniority in terms of military rank.
 They have contested in many major tournament finals and are currently the only two badminton singles players who have contested in two Olympic finals where Lin Dan won both of the time.
 They have also contested two BWF World Championships finals and one Asian Games final where all matches were very close hard fought 3 setters and won by Lin Dan.
 There 2011 World Badminton Championship match widely touted as one of the greatest badminton matches of all the time.
 In the semi-finals of the 2016 Rio Olympics, most possibly the last Olympic Games of both athletes' careers, Lee Chong Wei won against Lin Dan, for the first time on the Olympic stage, making Lee the second shuttler in any discipline of the sport in history to reach 3 consecutive finals after Fu Haifeng who had achieved the feat a few hours earlier in the men doubles.
 The two players exchanged a special moment in their rivalry and exchanged shirts as they exited the court.
 The 2016 Rio Games marks an end in the badminton era dominated by Lee and Lin.
 Nevertheless, the pair are good friends off court, having invited one another to each other's wedding and sharing a mutual love for fast cars and watches.
 Among the cars that Lee owns include a crystal grey Bentley Continental GT, a white Audi R8, a white Ferrari F430, a grey Nissan Skyline GTR, Range Rover Evoque, yellow Lamborghini Aventador and a BMW X6 besides the cars given to him by national automaker Proton.
 Lin, on the other hand, has a Porsche Panamera, a grey Aston Martin DBS and also a black Nissan Skyline GTR among his vast collection of supercars.
In Major League Soccer, several teams annually compete for secondary rivalry cups that are usually contested by only two teams, with the only exception being the Cascadia Cup, which is contested by three teams.
 Each cup or trophy is awarded to the eligible team with the better regular season record and are comparable to minor trophies played for in college football rivalries.
 Most cups are deliberately conceived as local derbies between teams in the same region.
 Rivalry cups are considered a tradition to most MLS fans and players alike.
 Out of the ten original MLS teams only three have not competed in these rivalry cups: Sporting K.C., New England Revolution and the defunct Tampa Bay Mutiny.
 Most newer local derbies such as the 401 Derby and Hudson River Derby are not contested for rivalry cups but instead for bragging rights of rival supporters groups.
 The only rivalry between two original MLS clubs that do not compete for a cup is the San Jose Earthquakes and the LA Galaxy in the yearly edition of the California Clasico.
 The Texas Derby are the only MLS cup rivalry games where the winner does not walk away with a cup trophy.
 Instead, the winner takes home "El Capitán" a replica 18th century mountain howitzer cannon.
Hex is a strategy board game for two players played on a hexagonal grid, theoretically of any size and several possible shapes, but traditionally as an 11×11 rhombus.
 Players alternate placing markers or stones (Go stones make ideal playing pieces) on unoccupied spaces in an attempt to link their opposite sides of the board in an unbroken chain.
 One player must win; there are no draws.
 The game has deep strategy, sharp tactics and a profound mathematical underpinning related to the Brouwer fixed-point theorem.
 It was invented in the 1940s independently by two mathematicians, Piet Hein and John Nash.
 The game was first marketed as a board game in Denmark under the name Con-tac-tix, and Parker Brothers marketed a version of it in 1952 called Hex; they are no longer in production.
 Hex can also be played with paper and pencil on hexagonally ruled graph paper.

Question: Two players played for both teams during the Cavaliers-Warriors rivalry, Andrew Bogut and someone who now plays for what team?
Answer: Los Angeles Lakers