Portsmouth sealed their promotion from Southern Electric Premier League division two with a tight three-wicket win over neighbours Hambledon.
But Dons skipper Rob Atkins was left to question the wisdom of the ECB fast bowling directive, which he believes cost his side dearly.
Hambledon were bowled out for 143 as Pat Burns and Andy Marston both claimed figures of four for 26.
But Prad Bains (six for 40) got the Ridge Meadow outfit right back in the contest as Portsmouth were reduced to 72 for seven in reply.
With the 19-year-old fast bowler forced out of the attack after his seven-over spell, under the guidelines designed to protect young players from injury, Vikram Dawson (33 not out) and Burns (35 not out) hauled their team to victory.
Atkins said: ‘He could have been in the Army for three years by now. So he can fight for his country but he can’t bowl more than seven overs in a spell in club cricket. It’s a crazy rule.
‘I understand why children need to bowl short spells but we’re talking about a 19-year-old man here.
‘I’m convinced if Prad had been allowed to bowl his 10 overs straight through, he would have bowled them out.
‘Portsmouth are a good side and we wish them well but they had a slice of luck.
‘He was unplayable at the time I had to take him off.
‘He was playing third-team cricket last summer and has now taken six wickets against a team destined for division one.
‘But it could have been so much more.’
Portsmouth could yet be crowned champions as rivals OTs & Romsey went down to a surprise defeat to Paultons.