This is the second time Tubbs has lost a coin flip to Crockett, the first time being in Milk Run (1985).
The scene where Switek discusses his feelings after Zito's death is one of the only times Zito is mentioned after he left the show in Down for the Count: Part II (1987). His passing would be mentioned again in A Bullet for Crockett (1988), which also included flashback footage of his death.
The instrumental rock track briefly heard over the radio in Diaz's car when he is spying on Tubbs is not an outside piece of popular music, but rather an untitled Jan Hammer composition written for the scene. This kind of "fake" song would become more prevalent in season 5, when the show's new composer Tim Truman would compose several such pieces for use in various episodes.