Exeter Chiefs coach Ricky Pellow says plans to cancel next season's LV= Cup are bad news for the club's youngsters.
They having won the trophy 12 months earlier, but the tournament is set to be cancelled next season because of the World Cup.
"The likes of Jack Nowell, Henry Slade and Sam Hill cut their teeth in this competition," he told BBC Radio Devon.
"For our younger guys it'll be a shame that they don't get a chance to have a go at this next year."
The World Cup takes place from 18 September through to 31 October and the need to avoid a fixtures pile-up because of a delayed start to the league season means the LV=Cup is unlikely to return until the 2016-17 season.
Exeter fielded mainly fringe players in this year's competition, with full-back Max Bodilly and back-rower Sam Skinner among those making their first-team debuts in the competition.
"We've got a few younger guys coming in from our academy and that would have been a good tool for them to play in," Pellow added.
"What we will do is pick one or two A League games here and there to get those guys game time.
"The Championship and the guys playing at their loan clubs will also be massively important next year.
"It is a shame because it's a great competition for us as a club, it's going to be disappointing that it's not there next year, but the World Cup will take a big drain in terms of time."