Visible crew/equipment: When Squad 51 is dispatched to an 'unknown type rescue', after stopping at the side of the road to talk to the two guys, when the squad follows the motorbike, the corner of the crew's reflector screen becomes visible as the squad pulls onto the road and drives off.
Visible crew/equipment: After rescuing the man from under the engine, when Roy and Johnny load him into the ambulance, the reflections of the array set lighting are visible on the ambulance windows, as Johnny and Roy close the back doors.
Visible crew/equipment: When Roy and John are at the bull corral, trying to rescue the guy who's been gored, in the closeups of the bull we can see metal piping at the top, right corner of the screen, as the camera moves.
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.
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 ★