Per the official Spurs press release:
The San Antonio Spurs today announced their 2016-17 training camp roster.
The Spurs current roster stands at 20 players, and includes the additions of center Joel Anthony, guard Nicolás Laprovíttola and forward-center Ryan Richards.
Anthony (6-9, 245), a nine-year NBA veteran, spent the last two seasons with the Detroit Pistons. The UNLV product has also played for the Boston Celtics and the Miami Heat, where he spent his first six-plus seasons and won back-to-back NBA championships in 2012 and 2013. Anthony has appeared in 471 career games, averaging 2.2 points, 2.8 rebounds and 1.11 blocks in 14.7 minutes.
Laprovíttola (6-4, 180) is a native of Argentina and has played professionally since 2007, most recently splitting last season between Lietuvos Rytas Vilnius (Lithuania) and Movil Estudiantes (Spain). In 20 games with Lietuvos, he averaged 10.3 points, 3.8 assists and 2.2 rebounds before making the move to Movil. In 20 games with Estudiantes, he posted averages of 13.8 points, 4.4 assists and 2.9 rebounds. Laprovíttola is also a member of the Argentinian National Team and competed in the 2016 Rio Olympics, where he averaged 8.2 points, 2.7 assist and 2.2 rebounds in six games.
Richards (6-11, 265) was originally drafted by the Spurs with the 49th overall pick in the second round of the 2010 NBA Draft. He split last season between Iran-Super League’s Shahdary Gorgan and Lebanon-Pepsi LBL’s Sagesse-Al Kekmeh Beirut. In 26 games with Shadary, he averaged 20.9 points, 9.0 rebounds and 2.0 assists in 37.6 minutes. After transferring to Sagasse-Al Kekmeh Beruit midway through the season, he averaged 15.8 points, 7.3 rebounds and 2.2 assists in six games.