Audio problem: When Squad 51 is dispatched to the hotel fire, Roy's holding the bullhorn in one hand to instruct everyone, and the HT in his other hand. After Johnny catches the baby, just before Truck 8 rolls in, when Roy says over the HT, "All right, set up the Truck...," he moves his hand with the HT away from his face and directs Truck 8, yet his voice is still booming as if speaking into it.
Audio problem: When Roy and John are with the unconscious man during the fire at the Atlas Hotel, Chet and Marco bring the stokes and Chet tells them that the fire is getting worse, and when Roy responds, "If we move him now we're gonna lose him," we see that Roy continues talking as Chet listens to him, but we hear nothing.






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 ★