Rafael Castro, a 23-year-old big man who was recently signed to a two-way contract back in August, has officially parted company with the Houston Rockets after being waived.After dismissing Tristen Newton to create a two-way space with Sean Pedulla and Quadir Copeland, Houston first targeted Castro. By taking a low-risk gamble on a developing big man, the front staff saw an opportunity to shift toward frontcourt depth.It made logical sense to create a new dynamic at the time because all three of