part in various exhibition games sponsored by Big Baller Brand. On January 13, 2018, Ball made his professional debut, going scoreless in five minutes against Lietkabelis. On February 4, he scored a season-high 19 points, with four three-pointers and six assists, in a loss to Žalgiris. In an exhibition game toward the end of the month, he suffered a leg injury that sidelined him for a month. On April 25, Ball left Prienai with his family, with his father criticizing the team's head coach Virginijus Šeškus, in part because Ball did not receive enough playing time. He finished the LKL season averaging 6.5 points and 2.4 assists, shooting 26.8 percent from the field, in 12.8 minutes per game. Los Angeles Ballers (2018) On May 4, 2018, Ball signed with the Los Angeles Ballers of the Junior Basketball Association (JBA), a new league created by his father as an alternative to college basketball, and was touted by the league as its "marquee player." In his debut on June 21, he posted a triple-double of 40 points, 16 rebounds, 10 assists and three steals, shooting 15-of-40 from the field, in a 134–124 win over the New York Ballers. Over eight regular season games, Ball averaged a triple-double with 39.6 points, 14.6 rebounds and 11.5 assists per game, while being named to the All-Star Game. In the playoff semifinals versus the New York Ballers, he scored a season-high 55 points, 16 rebounds and seven assists. He led Los Angeles to a JBA championship over the Seattle Ballers. After the season, Ball was named to the league's select team, called JBA USA, which would face several European teams on an international tour. On October 31, in an exhibition game versus Dzūkija on the tour, he was ejected after slapping an opposing player in the face during a scuffle. On November 5, he left the JBA tour to return to high school in the United States for his senior season. Illawarra Hawks (2019–2020) On June 17, 2019, Ball signed a two-year contract, including NBA out clauses, with the Illawarra Hawks of the Australian-based National Basketball League (NBL). He joined the Hawks through the NBL Next Stars program, which aims to develop NBA draft prospects. In August 2019, after playing for No Shnacks at the Drew League, Ball was named Leader of the New School, an award honoring the league's top rookie. For the NBL season,