Greek national basketball team player Giannis Antetokounmpo, NBA Milwaukee Bucks player, who won the NBA MVP award for the 2018-19 season, attends the official presentation of the Greek National Basketball team in Athens, Greece, Aug. 1, 2019. (Photo by Lefteris Partsalis/Xinhua)

Greek national basketball team pose with the executives of the sponsor at the official presentation of the Greek National Basketball team in Athens, Greece, Aug. 1, 2019. (Photo by Lefteris Partsalis/Xinhua)

Greek national basketball team player Giannis Antetokounmpo(front R), NBA Milwaukee Bucks player, who won the NBA MVP award for the 2018-19 season, with his brothers Kostas (front L) and Thanasis (front center), attend the official presentation of the Greek National Basketball team in Athens, Greece, Aug. 1, 2019. (Photo by Lefteris Partsalis/Xinhua)

Greek national basketball team player Giannis Antetokounmpo (L), NBA Milwaukee Bucks player, who won the NBA MVP award for the 2018-19 season, poses with executives from the sponsor of the team at the official presentation of the Greek National Basketball team in Athens, Greece, Aug. 1, 2019. (Photo by Lefteris Partsalis/Xinhua)

Greek national basketball team player Giannis Antetokounmpo, NBA Milwaukee Bucks player, who won the NBA MVP award for the 2018-19 season, attends the official presentation of the Greek National Basketball team in Athens, Greece, Aug. 1, 2019. (Photo by Lefteris Partsalis/Xinhua)

Greek national basketball team captain Ioannis Bourousis delivers a speech during the official presentation of the Greek National Basketball team in Athens, Greece, Aug. 1, 2019. (Photo by Lefteris Partsalis/Xinhua)

Greek national basketball team captain Ioannis Bourousis (C) and coach Thanasis Skourtopoulos (1st L) pose with executives of the sponsor at the official presentation of the Greek National Basketball team in Athens, Greece, Aug. 1, 2019. (Photo by Lefteris Partsalis/Xinhua)

Greek national basketball team player Giannis Antetokounmpo, NBA Milwaukee Bucks player, who won the NBA MVP award for the 2018-19 season, attends the official presentation of the Greek National Basketball team in Athens, Greece, Aug. 1, 2019. (Photo by Lefteris Partsalis/Xinhua)