The Spurs had lost six straight games to the Bucks, including three in a row at home, before posting a 105-102 road triumph on March 11. San Antonio has not swept Milwaukee since the 1997-98 campaign.
San Antonio is three games behind Midwest Division-leading Dallas for the best record in the NBA with 13 games remaining. The Spurs are 30-7 since January 1, including a 98-89 triumph over the Los Angeles Lakers on Sunday that capped a season sweep of the three-time defending champions.
The Bucks are 1 1/2 games in front of Washington for the eighth and final Eastern Conference playoff berth.
Milwaukee has won two of three after losing four in a row. On Saturday, the Bucks defeated New Orleans at home, 93-85, to earn coach George Karl his 700th career victory.