As expected, the deal is an Exhibit 10 contract, Derek Bodner of The Athletic tweets.
Robinson appeared in 33 G League games with Delaware and Capital City last season, averaging 14.2 points, 6.2 assists and 31.2 minutes per game. He also played nine brief games with the Wizards, scoring a total of 13 points in 49 minutes.
Robinson, 23, went unselected in the 2019 NBA Draft after spending four seasons at Virginia Tech. He quickly agreed to a deal with Washington, joining the team for summer league and sticking with the franchise until he was waived in January.
The Sixers are now carrying 20 players for training camp. The team has yet to formally announce its trade with the Thunder involving Al Horford, which will reportedly bring back Danny Green and Terrance Ferguson in return.