Other mistake: Roy and Johnny are in the squad when they're dispatched to the fire at the junior high, and while en route in the interior shot, in the rear-view mirror we see the reflection of the driver's helmet, and it has an 18 on it, instead of 51.
Other mistake: During the structure fire at the Atlas Hotel, when Roy and John are with the unconscious man being given proper CPR by civilians, it is too painfully apparent that the man giving rescue breaths is just leaning over the man's face, nowhere near the victim's mouth, particularly after Marco and Chet drop off the stokes.
Other mistake: When Brackett's on the line with Johnny, who's with the quarterback on the field, Brackett has the third button (out of five) pressed to record the conversation on the tape machine. However, in episode 2x5, "Peace Pipe", Brackett presses two buttons - the third and fifth, when Squad 51 is at the scene of the drunk driver's accident, and in 2x10, "Dinner Date", Dixie presses the second button to record, when Squad 51 is with the little girl whose arm is stuck in the pool drain.
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 ★