Grant the time-out?

[mplagrow]

8th grade boys, NFHS rules, close game in a weekend tournament. Sitch: Tie game, 11.5 left to play. Team A has a sideline inbound. They run a play and score a layup with about 4 seconds left. I'm now the lead official as I turn to go upcourt. From my vantage point I can see the coach and the clock. I don't know why he waited, but the coach did not call an immediate time-out. Finally he calls the timeout, and I've got three-tenths left, but the clock expired by the time I blew. Granted, it's pretty hard to be sure it was exactly three-tenths left, but that's what I saw when he called it. Is that enough to put time on the clock to give him a chance at a tap? I'll tell you the rest of the story after I hear some feedback.