Continuity mistake: TC is accepted as replacement and tells Claude the announcer his boxing credentials. During the wide shots, Shannen Doherty's hair runs to the sleeve of her shirt, does not in close-ups. (00:14:00)
Continuity mistake: Claude rings a cowbell to announce the contenders. Amongst the patrons, recognizable and featured prominently is a local girl with a brown dress and white shoulderstraps. She is shouting and cheering in a frontal view, drink in hand, but she is also sitting in another seat, smoking, in the shots from behind. (00:14:50)
Audio problem: During the first match, Rick shouts "Attaboy, TC!" from the corner but Larry Manetti pops in frame during the dodge, lips closed. (00:16:05)
Continuity mistake: Magnum is talking with the landlady in Chicago. He sneaks a peek of the Tigers game on TV. In the wider angle the newspaper in front of the TV is folded revealing different letters than in the close-ups, where it's tightly pressed. (00:19:25)
Other mistake: Fun gag but does not make sense; Magnum has a prolonged conversation at the bar (not a random brief chance encounter) with Lou Whitaker and Alan Trammel, and he, a huge Tigers Fan who in other episodes proved to be able to recognize obscure players from other past teams, needs the bartender to tell him who they were. (00:27:30)
Audio problem: Magnum poses as an envoy from Icepick. When he takes his feet off the desk, he says an "Okay" that the microphone struggles to pick up. (00:41:05)
Revealing mistake: When the brawl in Charlie's office begins, Tom Selleck changes into his stuntman who can be seen as he quickly stands and punches a goon. (00:41:50)
Continuity mistake: When the champion sends TC flying with some sort of flamboyant knee to the face, before TC gets to the ground you can see the towel on the top rope being quite distant from the turnbuckle. In the rest of the scene it is right by it. (00:42:45)
Continuity mistake: When TC hulks up from the stool for his last round, Rick has his right hand on the towel, which becomes the left hand as TC parries yet another haymaker. (00:43:40)
Revealing mistake: All the 'boxing' in the episode is unrealistic pure 80s Hollywood hot camp garbage, but the finishing blow of the final match in particular is miles off, bad even for the low standards of that sort of 'action'. (00:44:10)
Continuity mistake: When Higgins calls "Buster" and "Bobby K", a strong shadow appears on his forehead in the wider angles, nothing of the sort in close-ups. (00:47:35)
Continuity mistake: Throughout the episode, which covers a timespan of a couple of weeks, the various patrons of the bar/club where the fights take place for the most part are around for every match, which is not out of the ordinary but...wearing the same clothes too, that's more unusual.
Continuity mistake: Magnum is about to leave after the slightly awkward introduction to Holly Fox, but she calls him back saying "Maybe there *is* something you could help me with." He sticks his head back into the room, and you can see the glasses' left arm is above the shirt collar. Next shot and it went underneath. (00:13:40)
Continuity mistake: The chopper takes off from Higgie's un-birthday party, looking as usual. It flies over a shore to thwart Holly's plan, and doing so it has the flotation skids from a different chopper's stock footage. It is therefore also missing the birthday banner, that is present again in the finale. (00:45:10)
