We'll be keeping track of all of today's D-League comings and goings in this post. To keep up with the latest assignments and recalls, check out Hoops Rumors' 2012/13 list right here.

• The Thunder announced they've assigned Perry Jones III and DeAndre Liggins to the Tulsa 66ers. It's the second time they've each been sent down. Liggins has averaged 11.7 points and 8.0 rebounds in three games for Tulsa, while Jones has put up a total of 23 points and seven rebounds in his two D-League contests.  
• Forwards Chris Copeland and James White have returned to the Knicks after being assigned yesterday to the D-League's Erie BayHawks, the BayHawks announced via Twitter (hat tip to Keith Schlosser of Ridiculous Upside). Their return was expected when they were sent down, along with Amare Stoudemire, to practice with the BayHawks. Erie is in the midst of a four-day layoff, so none of the Knicks assignees saw game action. 
• The Pistons have brought back Khris Middleton and Kim English from the D-League, according to James Jahnke of the Detroit Free Press. Both rookies were sent down to the Fort Wayne Mad Ants a week ago. They were in the starting lineup for three games with Fort Wayne, with English putting up 18.0 points, 5.7 assists and 5.0 rebounds per contest, while Middleton posted averages of 11.0 points and 7.7 boards. Neither of them, both second-round picks this past June, have seen significant minutes for the big club in Detroit.
• The Spurs announced that they have assigned Kawhi Leonard to the Austin Toros of the NBA Development League for a medical rehab assignment.  Leonard has been sidelined with quadriceps tendinitis in his left knee since November 17th. Prior to the injury, Leonard appeared in nine games for the Spurs, averaging 10.6 PPG, 5.4 RPG and 2.0 SPG in 28.9 minutes.  Team doctors will determine a timeline for Leonard's return after he practices with the Toros.  

Here are Wednesday's D-League assignments and recalls from around the NBA:

• The Raptors have recalled Quincy Acy from their D-League affiliate, the Bakersfield Jam, the team announced today in a press release. Toronto is short-handed, with Kyle Lowry, Andrea Bargnani, Landry Fields, and Mickael Pietrus among the players suffering from injuries, so Acy will provide some depth.
• Fab Melo, who was recalled from the D-League by the Celtics on Monday, has been assigned back to the Maine Red Claws, the team announced today in a press release. The 22nd overall pick has yet to make his NBA debut.
• The Pistons have assigned rookies Kim English and Khris Middleton to their D-League affiliate, the team announced today. The duo is expected to spend a three-game stint with the Fort Wayne Mad Ants, tweets Keith Langlois of Pistons.com. English, the 44th overall pick in this year's draft, has appeared in ten games for Detroit, averaging 3.2 PPG in 9.2 minutes per contest. Middleton, the 39th pick, has played in just three games for the club.

The Pistons have officially signed second-round pick Khris Middleton, the team announced today (Twitter link). Terms of the deal aren't known, but it's likely not worth much more than the rookie minimum this season, perhaps with additional non-guaranteed years. As Keith Langlois of Pistons.com notes (via Twitter), the signing brings the Pistons' roster to 15 players.

Middleton, a 6'8" forward, averaged 13.2 points and 5.0 rebounds per game in his junior year at Texas A&M before declaring for the draft a year early. Considered the 48th-best available prospect by ESPN.com's Chad Ford, the 21-year-old was selected 39th overall by the Pistons, and showed flashes of promise in Orlando Summer League action.