Complex sentence: TNT had regularly broadcast NBA games on multiple Tuesday nights until the; the weekly telecasts were then moved to Thursday nights in, when TBS was opted out of rights to NBA coverage as a result of the league's contract renewal with Turner Sports.
Split into simpler sentences: TNT had regularly broadcast NBA games on multiple Tuesday nights until the. The weekly telecasts were then moved to Thursday nights in, when TBS was opted out of rights to NBA coverage as a result of the league's contract renewal with Turner Sports.