Samanic is a 6-foot-10 power forward who played for Petrol Olimpija last season, where he averaged 7.96 points and shot 34% from 3-point range. The 6-foot-6 Johnson averaged 13.5 points and 5.9 rebounds in his lone season for the Wildcats.
San Antonio acquired the 29th pick from Toronto as part of the trade for Kawhi Leonard. The Spurs also had the 49th selection during the second round.
The Spurs are rebuilding after the franchise was turned upside down last offseason after relenting to Leonard's trade demand and sending him and Danny Green to the Raptors for DeMar DeRozan and Jakob Poeltl. Leonard was named the NBA Finals MVP after leading Toronto to the franchise's first championship.
San Antonio had two picks in the first round for the first time since 1987, when they selected David Robinson first overall and Greg Anderson at No. 23.
The Spurs were without a lottery pick for the 22nd consecutive season, the longest streak in the NBA history. San Antonio has made the playoffs 23 straight seasons despite that.
