Continuity mistake: While Early, Morton, and Dixie are examining the young boy who fell, Early's wearing a gold ring (wedding band in real life) on his left hand's ring finger, but when Dixie finds the tick she asks Early to have a look, and in the closeup of the boy's head, Early's gold ring has vanished.
Continuity mistake: When Engine 8 is dispatched to "man unconscious at construction site," we see Engine 8 going past Curson Ave, then the next shot Engine 8 is driving up from the other direction of Curson Ave and passes it going the other way. Neither are flipped shots. Other than seeing the sign for Curson Ave, other giveaways are the same signs or parked vehicles.
How Green Was My Thumb? - S3-E17
Continuity mistake: When Roy and Johnny search for the missing man during the fire at the winery, Johnny jumps into the wine vat to rescue the drowning man, getting himself completely soaked, but when he and Roy bring the man out to the squad, Johnny's clothes are pretty much dry.
Continuity mistake: When John and Roy are at the park with the injured football player and his son, the shadows that are cast over the entire area change significantly when the ambulance arrives.
Continuity mistake: While Roy and John are with the man whose back went out, when Thadeus runs off with the BP cuff and Roy chases him, Roy has the stethoscope around his neck with the chest piece hanging down, but once Roy falls into the pool the chest piece is suddenly tucked down into the front of Roy's shirt.
Continuity mistake: When the guys are listening to the baseball game on the radio, dispatch drops tones for Engine 16 and only Squad 51, yet Chet turns the radio off, and all the engine company guys rush out of the day room then head to their rig, even though it's only Roy and John that were dispatched.
Continuity mistake: While the judge and young lawyer are doing CPR to help, Roy's tearing off strips of tape and placing them on his pants (for IV as usual), then after he asks Johnny, "Were you able to get in touch with Rampart?," in the next shot all those strips of tape have vanished from his pant leg, only to reappear when Roy defibs the patient.
Heavyweight - S3-E5
Continuity mistake: At the start, after Station 51 is dispatched to the apartment fire, when a musician asks Captain Stanley for help removing instruments from the burning building, the next shot showing Truck 98 rolling up is footage from 2x13, "Drivers", during the fire at the Atlas Hotel. We can even see the smoke through the Atlas Hotel's windows, and Squad 51 parked across the street. More footage from the Atlas Hotel fire is shown when Engine 16 rolls up. Additional footage from other episodes are shown as well, when we see helmets and rigs bearing company numbers that were not called to this fire.
Nurse's Wild - S1-E7
Continuity mistake: While Early, Dixie, and Brackett are talking in the hallway about going to lunch, Ellen comes out of the treatment room (opposite receiving) next door to treatment 2 and calls to Dr. Early, but when Early and Ellen walk back into that room, they are now in treatment 3, which is directly opposite from treatment 2.
Continuity mistake: After Johnny and Roy find the motorcycle and its injured rider, Johnny wraps his arm/shoulder area, but the way it's wrapped - whether or not it's over the shoulder and/or at his waist, and the amount that's wound around his body, significantly differs between shots until they see Vince at the base station.
The Wedsworth-Townsend Act - S1-E1
Continuity mistake: When the man who was electrocuted is loaded onto 127's snorkel, we can see that he's wearing a white crew-neck undershirt under the denim shirt, but at the ER when his denim shirt is open there's nothing underneath.
Continuity mistake: When the unconscious boy is brought to the ER, he's taken into treatment 2, with a windowless door, but when Early is doing the lumbar tap on the boy, the door behind Early has a window, and also by the way the room is set up, we know it's treatment 1 he's in, not 2.
Continuity mistake: At the restaurant, when they begin to work on getting Mrs. Merkle out from under the car, Vince sets the Biophone down on the table, and there's a netted, red glass candle on the table, but in a following closeup the candle's net has vanished and it's pinkish clear glass now. Other items on the table change as well.
Continuity mistake: When Ruthie is wheeled into the ER, Dixie tells the attendants to put her in the treatment room where Dr. Early's waiting, and they wheel her into treatment 2 which has a windowless door, but when they're in the room the door has a window, which means she's in treatment 1, not 2. Plus the fact that both treatment rooms are set up differently.
Continuity mistake: In the opening shot of Roy and Johnny at the whale tank, the maintenance guy behind them is standing between the red bleacher seats and purple seats below, but in Roy and Johnny's closeups the guy is standing between the two top purple bleacher seats, then when the whale splashes, it goes back and forth yet again.
The Tycoons - S5-E23
Continuity mistake: When the patient with the heart wound is brought to the ER, he's wheeled into treatment 2, which has a window on its door, and is on the side of the hallway with the yellow line closest to it. Later we see treatment 1 twice, when Vince brings in the burglary suspect with a bullet in his leg, and also when John and Roy rush the baby to the ER. They used the same room as treatment 1 and treatment 2, but there are just two treatment rooms on that side of the hallway and only one of them has a window on its door - the one that's opposite the nurses' station, treatment 1.
Fair Fight - S6-E5
Continuity mistake: At the start of the episode, we see the squad and engine pull back into the station, and one of the guys - it would be either Marco or Chet, is standing on the engine's tailboard motioning to Mike, who is driving backwards, but in the next shot both Marco and Chet are seated in their jumpseats as Engine 51 comes to a stop.
Fair Fight - S6-E5
Continuity mistake: At the structure fire, when Roy and Johnny rescue the man in room 22 by breaking the window, the door to room A is right beside them and we can see the axe mark on the door and the damage to the wall. When Johnny and Roy go back through the window to look for the missing Dr. Bennis, as Johnny uses the K-12, the door to room A now has many more axe marks and the damaged wall is far less damaged.
Continuity mistake: When Morton and Early are examining the guy with stomach pain and cramps, Morton's stethoscope is around his neck with the earpiece at his left and the chestpiece to his right, but in the closeup it's the opposite way around, then it's back to the original way.
Continuity mistake: When the cardiac patient is finally brought to the ER, and goes into full arrest number four, he's wheeled into treatment 1 which does not have a window on its door, but in the next shot from inside the room the door has a window, and when they're defibbing him, we can see the nurses' station outside the door, which means he's now in treatment 3, not 1.
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 ★