Cook's Tour - S1-E4
Visible crew/equipment: After Roy and John pull up to the house with the woman in labor, when the deputy pulls up behind Squad 51, the reflection of production equipment alongside the lamppost is visible on the car's surface. In the previous long shot of the house, we see there is only a large area of grass in front of the house.
Cook's Tour - S1-E4
Other mistake: When Johnny and Roy visit the woman they assisted in delivery, they go through the ER's double doors opposite receiving, as if heading upstairs to her room, and soon she even comments that the baby was brought up to her from the ER. Then, when the guys leave her room, Roy pushes open the door on the right, and we can see the ER's treatment 5 and the silver cabinets right up the hallway, so we know that Roy and John were actually in the room just off to the side of the nurses' station in the ER.
Cook's Tour - S1-E4
Continuity mistake: When Roy and Johnny are dispatched to the home of the woman who's in labor, the deputy shatters the door's pane of glass, but there is absolutely no glass on the carpet once they enter the house.
Cook's Tour - S1-E4
Continuity mistake: At Rampart, after delivering the baby, when Gage flirts with the two nurses the amount of soda pop in the nurse's bottle increases considerably between shots.
Cook's Tour - S1-E4
Continuity mistake: While Early is trying to remove a young boy's hand from a vase, in the shot from inside the room he's in treatment 3 with a windowless door, but when he steps into the hallway and asks Sharon for ice cubes he's at treatment 5 with a window on the door.
Cook's Tour - S1-E4
Continuity mistake: When Squad 51 is dispatched to the 'injury in alley', after John defibs the teenager, when he removes the diagnostic penlight from his belt holster, the kelly forceps fall out of the holster, but when he puts the penlight back into the belt holster the forceps are back in its place.
Other mistake: When Chet Kelly breaks his glass that he was drying in the first shot after showing Station 51, Captain Hammer is on the phone and begins walking to Chet when he groans after breaking the glass. Then it switches to another shot where Marco Lopez yells "Medic!", and Captain Hammer reaches Chet. After that it switches to a shot where John Gage and Roy DeSoto walk over to Chet and the angle goes wide. At this point Captain Hammer hangs up the phone again and begins to walk over to Chet again. When it switches to the shot where Johnny and Roy reach Chet, Hammer is already there like he was when Marco yells for Johnny and Roy. No one else, like Mike Stoker, does this. (00:00:05)
Visible crew/equipment: At Rampart, when Brackett walks over to Roy to speak with him about the birth of another baby, the actor's black tape mark is visible on the floor, just before Brackett stands there.
Continuity mistake: When Johnny finds the looter's leather bag with the stolen jewelry, the bag's large front flap goes from being flipped open facing Johnny to the opposite way, between shots.
Visible crew/equipment: When Johnny and Roy are back at the command post and hand over the looter (Tony Dow) to the deputy, the four actors' marks are visible on the ground where they stand.
Continuity mistake: After Johnny and Roy bring the injured fireman to the ER, Emma walks up to them in the hallway to ask why they haven't put out the fire yet, and the large handbag hanging from her left arm is suddenly on her right arm when it cuts to the close-up.
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.
Continuity mistake: When Station 51 is being dispatched to the brush fire, there's black tape on the chrome trim of the squad's lightbar, but when Squad 51 arrives on scene the black tape has vanished. Then later at Rampart, after Brackett calls Roy a hose jockey, the black tape is back, but vanishes again when they rescue the injured looter.
Continuity mistake: While Squad 51 leaves the brushfire area with the looter (Tony Dow), when Johnny requests a water drop the helicopter pilot says that he's Copter 2, but the footage we see of the chopper flying overhead is of Copter 14 and Copter 10.
Revealing mistake: When the boy is discharged from the ER and is reunited with his dog, John and Roy are standing near the squad watching the reunion, and the usually highly reflective surface of the passenger side spotlight has been sprayed with a dulling spray, to temporarily dull the surface.
Continuity mistake: After Johnny and Roy get back to the fire's base station and hand the looter over to Vince, when they find Grover in the pen with the other dogs, Roy checks the dog's ID tag and in the two wide shots Roy's holding it with one hand while the other hand is up on the gate, but in closeup both of Roy's hands are holding the collar and ID tag.
Continuity mistake: When Roy and John leave the ER after the baby delivery, the base station dispatches them to the motorcycle accident, and in the next shot as the squad turns the corner, there are three people in Squad 51, we see Roy, Johnny and someone seated between them, while they're en route.
Visible crew/equipment: After Roy helps the looter into the squad, when Johnny goes to the motorcycle and finds the leather bag full of jewelry, the mic wires that run from under his shirt/belt into his right pants pocket (with the transmitter bulge) are visible as he bends down.
Visible crew/equipment: After the looter is helped into the squad, just as Roy gets into the driver's seat, the reflection of camera equipment becomes visible on Squad 51's vent window (not to be confused with Roy's arm or the reflection of the red wing mirror).
Revealing mistake: After Squad 51 is dispatched to the motorcycle accident, there are wide shots of the squad driving through the hills, then in the closeups of Roy and John, the squad shakes from side to side to mimic driving, but we can see that the surrounding rocky area behind the squad (matte painting) does not actually change at all.
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 ★