The Dallas Mavericks are waiving 6-foot-10 forward Kostas Antetokounmpo, according to Tim MacMahon of ESPN.

Kostas, the younger brother of reigning league MVP Giannis Antetokounmpo, was signed with Dallas on a two-way contract and only appeared in two games for the Mavs during the 2018-19 season.

Antetokounmpo, 21, was selected with the last pick in the 2018 NBA Draft by the Philadelphia 76ers, who traded his draft rights to Dallas on the same night. The Greece-born Kostas, who attended high school in Wisconsin, signed a two-way contract with the team last July and toiled in the G League with the Texas Legends.

In 40 games with the Legends, Antetokounmpo averaged 10.6 points, 6.1 rebounds and 1.4 blocks a contest, shooting 52.5 percent from the field, 24.4 percent from deep, and 67.8 percent from the free throw line.

The Mavs made the decision to waive Kostas after what could be said as a horrible summer league for the young Greek. In the five games he played and started in Las Vegas, Antetokounmpo never really managed to impress. He wound up playing just 13.5 minutes a game, averaging 5.8 points and 2.8 rebounds on 39.3 percent shooting from the field and 18.2 percent from the 3-point territory.

Dallas is likely planning to give the vacated two-way spot to one of their summer league standouts, specifically Mavs' second-round pick Isaiah Roby.