After taking Monday off for rest, Giannis Antetokounmpo simply overpowered Ukraine and ensured that Greece would finish atop its group.
Antetokounmpo had his 41 points and nine rebounds in just 27 minutes to lead Greece (4-0).
He was 13 for 18 from the floor, 15 for 18 from the foul line.
Nick Calathes and Tyler Dorsey had 13 apiece for Greece.
Issuf Sanon and Svi Mykhailiuk each scored 16 for Ukraine (3-1), while Alex Len and Illya Sydorov added 10 apiece. Ukraine led by seven at the half, before Greece won the third quarter 32-11.