The Spurs beat the Raptors 905 98-76 Tuesday night, finishing off a two-game sweep and winning their second G League Title in franchise history.
Nick Johnson scored a team-high 17 points off the bench and chipped in with four rebounds and three assists to take home Finals MVP honors.
Austin won its first title in 2012 when they were known as the Austin Toros.
Austin finished with the best record in the Western Conference and second best in the G League during the regular season.
The Spurs romped through the playoffs, beating the RGV Vipers in the conference semifinals, the South Bay Lakers in the conference final and beating the Raptors 105-93 in Game 1 of the finals on Sunday night.
Jaron Blossomgame had a double-double scoring 15 points with 10 rebounds. Jeff Ledbetter added 16 points, Olivier Hanlan scored 14 points and Darrun Hilliard finished with 12 points. Derrick White had nine points, six assists and five rebounds in Game 2.
Ledbetter scored 10 points and was perfect from 3-point range to help Austin get out to a 10-point first-quarter lead. Blossomgame, Hilliard and Johnson all scored 11 points in the second half as the Spurs pulled away for the fourth straight game.