Question: Why was O.J Mayo, named the Most Valuable Player at the 2007 Anaheim Classic dismissed from the NBA?
Context: Scott Niedermayer (born August 31, 1973) is a Canadian former ice hockey defenceman and current Special Assignment Coach of the Anaheim Ducks.  He played 18 seasons and over 1,000 games in the National Hockey League (NHL) for the New Jersey Devils and Anaheim Ducks.  Niedermayer is a four-time Stanley Cup champion and played in five NHL All-Star Games.  He won the James Norris Memorial Trophy in 2003–04 as the NHL's top defenceman and the Conn Smythe Trophy in 2007 as the most valuable player of the playoffs.  On January 27, 2017, in a ceremony during the All-Star Weekend in Los Angeles, Niedermayer was part of the second group of players to be named one of the '100 Greatest NHL Players' in history. Jerry Ray Lucas (born March 30, 1940) is an American former basketball player and memory education expert.  He was a nationally-awarded high school player, national college star at Ohio State, and 1960 gold medal Olympian and international player before starring as a professional player in the National Basketball Association (NBA).  As a collegian, Lucas led the Ohio State Buckeyes to the 1960 college national championship and three straight NCAA finals.  He remains today the only three-time Big Ten Player of the Year, and was also twice named NCAA Player of the Year.  As a professional, Lucas was named All-NBA First Team three times, a NBA All-Star seven times, was 1964 NBA Rookie of the Year, and was named Most Valuable Player of the 1965 NBA All-Star Game among other honors and awards.  He was inducted to the Naismith Memorial Basketball Hall of Fame in 1980. Simona Gioli (born September 17, 1977 in Rapallo) is a volleyball player from Italy.  Currently, she plays for Galatasaray in Turkey.  Gioli was a member of the Women's National Team that won the gold medal at the 2007 European Championship in Belgium and Luxembourg.  Gioli was named "Most Valuable Player and ""Best Blocker" at the 2007 FIVB Women's World Cup and 2009 FIVB Women's World Grand Champions Cup.  She was also awarded "MVP" at the 2006-07 CEV Cup won by her team Sirio Perugia.  She won the 2007–08 CEV Indesit Champions League with Sirio Perugia and also was individually awarded "Most Valuable Player". Russell Westbrook III (born November 12, 1988) is an American professional basketball player for the Oklahoma City Thunder of the National Basketball Association (NBA).  He is a six-time NBA All-Star, and a two-time NBA All-Star Game Most Valuable Player, winning consecutive awards in 2015 and 2016.  He is also a six-time All-NBA Team member and led the league in scoring in 2014–15 and 2016–17.  In 2017, Westbrook became one of two players in NBA history to average a triple-double for a season, along with Oscar Robertson in 1962.  He also set a record for the most triple-doubles in a season, with 42.  He was subsequently named the 2016–17 NBA Most Valuable Player. The 2007 Anaheim Classic was played between November 22 and November 25, 2007 at the Anaheim Convention Center in Anaheim, California.  The champion of the tournament was Southern California, who defeated Southern Illinois in the Championship Game.  The Most Valuable Player was O. J. Mayo of Southern California. The 2013 NBA Summer League is a pro basketball league run by the NBA just after the 2013 NBA draft.  It gives newly drafted players a chance to test their skills against each other, and to give them a feel for professional basketball.  All 30 NBA teams participated, along with the D-League Select.  The Miami Heat were the only team to participate in both Summer Leagues.  It ran from July 7–12 in Orlando and July 12–22 in Las Vegas.  Jeremy Lamb of the Oklahoma City Thunder was named the Most Valuable Player of the Orlando Summer League.  Jonas Valančiūnas of the Toronto Raptors went on to be named the Most Valuable Player of the Las Vegas Summer League.  Ian Clark of the Golden State Warriors was named the Most Valuable Player of the Las Vegas Summer League Championship Game. Leanne Del Toso (born 12 August 1980) is a 3.5 point wheelchair basketball player who represented Australia at the 2012 Summer Paralympics in London, where she won a silver medal.  Diagnosed with chronic inflammatory demyelinating polyneuropathy at the age of nineteen, Del Toso started playing wheelchair basketball in 2006.  Playing in the local Victorian competition, she was named the league's most valuable player in 2007.  That year started playing for the Knox Ford Raiders in the Women's National Wheelchair Basketball League (WNWBL).  The following year, she was named the team's Players' Player and Most Valuable Player (MVP). Kevin Wayne Durant (born September 29, 1988) is an American professional basketball player for the Golden State Warriors of the National Basketball Association (NBA).  He has won an NBA championship, an NBA Most Valuable Player Award, the Bill Russell NBA Finals Most Valuable Player Award, the NBA All-Star Game Most Valuable Player Award, four NBA scoring titles, the NBA Rookie of the Year Award, and two Olympic gold medals.  Durant has also been selected to seven All-NBA teams and eight NBA All-Star teams. The Chinese Basketball Association (CBA) MVP is the annual award that is handed out at the end of each Chinese Basketball Association (CBA) regular season to the league's most valuable player.  From the league's inaugural 1995–96 season until the 2011–12 season, only Chinese/Taiwanese players were eligible to win the award.  Since the 2012–13 season, separate awards for both domestic and international players are handed out.  Domestic players are eligible to win the CBA Domestic Most Valuable Player award, while international players are eligible to win the CBA International Most Valuable Player award. Ovinton J'Anthony "O. J." Mayo (born November 5, 1987) is an American professional basketball player.  He played one season of college basketball for the USC Trojans while earning first-team All-Pac-10 honors.  The team forfeited all of its wins that season and Mayo lost his remaining three years of National Collegiate Athletic Association (NCAA) eligibility after it was ruled he received improper benefits.  Mayo entered the 2008 NBA draft and was selected by the Minnesota Timberwolves with the third overall pick.  He was later traded to the Memphis Grizzlies, with whom he played four seasons.  In 2011, he tested positive for a banned steroid and was suspended by the NBA for 10 games.  Mayo signed with the Dallas Mavericks in 2012, and then with the Milwaukee Bucks in 2013.  On July 1, 2016, Mayo was dismissed from the NBA for violating the league's anti-drug program.
Answer: violating the league's anti-drug program