Exeter City boss Paul Tisdale says inexperience in his side was the reason for their FA Cup exit at Walsall.
The Grecians lost 3-2 after extra time with Tom Nichols, Elliot Frear and Jimmy Keohane coming off the bench.
The trio have a combined total of 17 senior appearances, and just one start, between them.
"We made plenty of errors, but it's no wonder when you look at the inexperience in the side at the end of the game," Tisdale told BBC Devon.
"That's not a slight on those young players, it's a fact."
City were without skipper David Noble who failed a fitness test before the match.
"I don't think in my five-and-a-half years at Exeter we've finished with such an inexperienced side on the pitch," Tisdale said.
"Although I'm frustrated at some of the errors we made as a side and how fragmented it was, it's no wonder.
"I was so keen to progress in this competition, but that's life. We gave it our best shot and we just weren't good enough."