Visible crew/equipment: After Roy and Johnny are dispatched to the woman whose hand is caught in the blender, when they ring the doorbell and then walk to the back door, the outline of the mic transmitter is visible at the back of Johnny's shirt.
Continuity mistake: When Squad 51 is dispatched to the woman whose hair is caught in the meat grinder, time out is 12:34, and right after that quick run they stop by Rampart. Back at the station, after Chet mentions that when they started their shift that morning Boot was fine, they're all dispatched to the gasoline tanker traffic accident, and the time out is 9:18 in the AM. Then the next run Squad 51 responds to is the woman caught in the mixer, and the time out is 15:54.
Visible crew/equipment: When Boot goes missing and 51's guys search for him, Roy finds Boot under the bed in the dorm, and the outlines of Johnny's mic transmitter and wire are visible on the back of his shirt.
Visible crew/equipment: When Boot follows Chet into Captain Stanley's office and the guys follow Boot, the outlines of Johnny's lav mic transmitter and wire are visible on the back of Johnny's shirt.
Visible crew/equipment: After Roy and Johnny help the woman whose hair was caught in the meat grinder, when they're putting their gear back in the squad, the outlines of the mic transmitters and wires are visible at the backs of Johnny's and Roy's shirts.
Visible crew/equipment: When the Battalion Chief, Roy, and Johnny walk into Captain Stanley's office to speak with the officers, two actor's tape marks are visible on the floor in front of the desk.
Visible crew/equipment: When Johnny and Roy are speaking with the Battalion Chief in the apparatus bay, about who could have stolen the money, when they walk forward there are two tape marks visible on the floor behind them, where they were just standing.
Deliberate mistake: At the very end of the episode, Roy and John are walking back to the unit and the driver side mirror appears to be parallel with the unit. The driver would see their own reflection at best.
Visible crew/equipment: When Roy and Johnny pull into the parking space near the car with the toddler inside, as the camera moves we see its moving reflection on the side of the car. Then when the woman says "Certainly something's wrong with him, he's unconscious," as the camera pulls back we can see its reflection in the car window. We can also see the reflection of the large location lighting when Johnny tries to unlock the door with a wire hanger.
Other mistake: When Johnny and Roy are with the baby who's sleeping in the back seat of the locked car John says, "The roof is hot, I think the heat might have built up inside," and the bystander says, "Lord knows how long he's been lying in there broiling in the sun," but what's funny is that they're all wearing winter coats and jackets.
Revealing mistake: At the construction accident with the trapped man, when Engine 34 rolls up on scene we can see the red vinyl material adhered to the front of the engine, covering its real company number.
Audio problem: After Johnny successfully unlocks the car with the toddler inside, when he and Roy hold him the audio we hear is of the toddler crying, even though in some shots it's obvious that he's not really crying. Additionally, when the toddler was still locked in the car wrapped in a blanket, in the closeup his hair (actually a doll's hair) is much thicker and longer than it is when they get him out.
Continuity mistake: When Station 51 is dispatched to the man trapped at the construction site, there are closeups of the shaky concrete wall that may collapse before they shore it up with 4x4 support beams, but in following closeups of the same angle those support beams they added have vanished, then they reappear.
Character mistake: When Brackett and Early are dealing with three squads at the base station at the same time, Squad 51 has two victims - father and son, Squad 18 has a pulmonary edema, and Squad 36 has only one bicycle rider with severe head injuries, because the second rider died, so the total is four out of five being dealt with. Back at the station, after Johnny asked Dixie about the condition of all the victims, he tells Roy that the father and son are both responding, so is Squad 18's pulmonary edema, and for Squad 36's bike accident, that "both" are coming out of the coma, which totals five victims. Then Roy responds, "Four saves out of five victims. That's pretty good." Johnny should not have said, "both" since it was just one rider.
Character mistake: Days after Drew's death (Roy and Johnny had two days off after Drew's death), during the meeting that Brackett has with the four paramedic units, one of 59's guys asks, "What do we do when we have this overload situation on the same frequency? Two squads, like 51 and us today?" The situation with the frequency did not happen "today" as he said, it happened at least three days prior.
Character mistake: In the morning, when Roy and Johnny are by the lockers, talking about what Johnny did on his days off, Roy tells Johnny, "I came on this morning, guys on A shift told me that they had a meeting with Brackett at Rampart yesterday." It could not have been "A shift" because Roy and Johnny work the squad for A shift, with Captain Stanley and the rest of the guys. And we know that Roy and Johnny didn't switch shifts with B or C, since the rest of A shift are there with them, working the engine that day.
Other mistake: When Johnny and Roy are at the construction site with the injured father and son, Rampart is also on the line with two other squads - Squad 18, treating a pulmonary edema, and Squad 36, treating a bike accident. When Marco and Chet carry up the stokes basket, we hear the dispatcher saying, "Engine 21 and Squad 18, heart case...," even though Squad 18 is already tied up with the pulmonary edema.
Revealing mistake: While 51's guys are on the roof of the construction accident, when Truck 8 rolls up on scene and then places its outriggers we can see the red vinyl material adhered to back of the engine, covering its real company number.
Continuity mistake: At the construction site, after the younger patient has been taken to the ambulance, when Roy tells Johnny that it was pretty good radio work, Johnny's holding his helmet, but in the next shot as Johnny stands up his helmet is gone, though there is a helmet near the drug box behind him.
Audio problem: When Roy and Johnny are with Dixie in the ER, after all the bikers' violence, Squad 51 is dispatched to 'man possibly trapped' and when we hear Johnny respond, "Squad 51, affirmative," his mouth does not say the word "affirmative", he says something else.
Answer: I was rewatching a few first season episodes of Charlie's Angels (1976), and in S1xE6 "The Killing Kind," I recognized the same actor. So, to finally fully answer your question, the two baseball players in School Days are played by Rod Perry and Sean Fallon Walsh.
Super Grover ★