Jamieson had enjoyed a successful season with Services before the Covid pandemic and he proved the big difference in a tight final of a cup competition that was celebrating its 150th anniversary.
To mark the competition’s anniversary the Plymouth Combination awarded a man of the match award, which, not surprisingly went to Jamieson.
They took the lead on Wednesday against Services II in just the second minute when centre Pete Keanie kicked a penalty.
The game was then held up for two lengthy spells due to injuries to both teams and Services lost their influential full-back Toby Moss.
Keanie then doubled Oaks’ advantage with another penalty before Jamieson scored his first try with a great long-range effort to make it 11-0.
Devonport had struggled to get going, but in the 35th minute they did close the gap with a catch-and-drive try by youngster Oli Symons.
Services were getting frustrated, but they cut the gap with a try by John Mason, which Tom West converted.
West then kicked a penalty to make it a three-point game.
But almost straight away, Oaks got a penalty at the other end that Keanie kicked to make it 21-15.
Services were then penalised for crossing when they were close to scoring and straight away Oaks broke and nearly scored. Devonport did stop them at the last minute, but illegally according to the referee, who reduced them to 14 men for 10 minutes. And Keanie kicked the resultant penalty to make it a two-score game.
“It was a really good night,” said Oaks’ Aiden Taylor. “It is good to get some silverware – it’s the first time in four years. I’m delighted for the club.
“The game was a bit scrappy but we kicked our points.
“We didn’t play our best but we took our chances.
“I thought we defended really well as they came at us really hard, but I thought we deserved it in the end.
“It was great for the club to get two cup final wins.”
Devonport Services were disappointed that a number of decisions went against them on the night and head coach Mike Lewis felt the Plymouth Rugby Referees’ Society had made the ‘wrong’ decision with their choice of referee for the final.
“But, just like last week, I was pleased with the way our players conducted themselves.”
Services’ defeat on Wednesday night means the club cannot win the four trophies in 10 days that they were hoping for.
However, they have a chance to bag some silverware on Saturday when they host Crediton at the Rectory in the Devon Senior Shield.
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