The San Antonio Spurs announced Thursday they have assigned forward Jonathon Simmons to the Austin Spurs of the NBA Development League, marking his second stint with the team this season. Simmons (6-6, 195 pounds), posted 17 points (6-9 FG, 5-5 FT), 4 rebounds and 4 assists against Grand Rapids on Nov. 17, his lone outing with Austin this year. Simmons is averaging 5.6 points, 1.7 rebounds and 1.1 assists in 14.0 minutes in 48 appearances this season with the Spurs.