Factual error: At the onset of the baseball game, take a look at the Angel's catcher as Mariner Jay Johnstone steps up to bat. You will see he is wearing just a standard baseball hat under his catcher's helmet. MLB rules requires some form of certified (protective inside and out) plastic helmet for catchers, and thus this would not be allowed. (01:07:35)
The Naked Gun (1988)
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Directed by: David Zucker
Starring: Leslie Nielsen, O.J. Simpson, Ricardo Montalban, Priscilla Presley
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Driving instructor: Now, Stephanie, gently extend your arm. Extend your middle finger.
Trivia: The baseball blooper reel shows a ballplayer's head coming off when he crashes into a fence. This scene is a tribute to a quote from San Diego Padres announcer Jerry Coleman: "Winfield goes back to the wall. He hits his head on the wall - and it rolls off! It's rolling all the way back to second base! This is a terrible thing for the Padres."
Answer: Because Nordberg was working undercover in Ludwig's organization; not knowing this, the snitch would only see him working with Ludwig's crew, and would thus believe he was dirty.