Ewing Athletics Center Retro- A blast from the past with the Center Retro from Ewing Athletics. These classic sneakers debuted in 1991 and are set to make a return on April 4th in two color ways. As usual a "Knicks" color way will release, along with a black and white color way. Both color ways will be available at BX Sports on April 4th, 2014. But for now continue reading to see more images of the Ewing Athletics Center Retro.