Roby, 25, signed with New York on the final day of the 2022/23 regular season. He spent most of the season with the Spurs, appearing in 42 games and averaging 4.1 points and 2.5 rebounds in 11.3 minutes per night before being released in early March. Roby spent his first three NBA seasons with Oklahoma City.
Martin signed a two-way contract with the Knicks this summer after going undrafted out of the Overtime Elite League. His departure leaves New York with an open two-way slot as the others are currently held by Nathan Knight and Dylan Windler.
Roby got into two of the team’s three preseason games and averaged 8.0 PPG and 2.5 RPG. Martin made one three-minute appearance during the preseason.
Neither player had any guaranteed money for this season, so the moves won’t cost the Knicks anything. The team is down to 19 players on its roster, with 12 fully guaranteed contracts.