Japan guard Keisei Tominaga is joining the Indiana Pacers G League affiliate franchise the Mad Ants, his management company said Wednesday. The 23-year-old, known for his shooting from behind the arc, was waived by the Pacers on Sept. 27 a day after the NBA club signed him to an Exhibit 10 training camp contract. “I hope to contribute to the team winning by displaying my strength, three-pointers and passion,” Tominaga said in a statement. “I want to develop further and keep challenging myself to realize my dream of becoming an NBA player.” The Aichi Prefecture native had a highly productive fi…