The baseball scoreboard with the bridge on top in center-field behind co-star Michael Gaston (who plays officer Mike Costello) is the one at the Ballpark At St. George on Staten Island, New York.
Medical examiner Joanne Webster (Jane Curtin), examining a dead man found in a baseball park, determines that he died as a result of a fall, even though there's no apparent place he could have fallen from. Detective Roe Saunders (Kevin Rankin) says, "Say it ain't so, Jo", echoing a newspaper headline referring to "Shoeless" Joe Jackson and the 1919 Black Sox baseball scandal.
Gabriel Gaston, who plays Mike Costello's son Spence, is the real life son of Michael Gaston.