What is significant of Ky's behavior when playing games with Xander?

At the Activity Center, Xander challenges Ky to a game. This is unusual and might be a hint that Xander is challenging Xander to more than a game. He might really know about the connection between Ky and Cassia. He notices that Ky always throws games. Ky always does his best to stand back and observe others. He is careful to avoid standing out either as a failure or as one who excels.