In the first half, his performance in midfield helped the home side to a 2-1 interval lead over Goodwick United, yet when he left the field though injury as half-time loomed, the visitors sensed an imbalance in the home team's ranks to sweep in for the kill.
It didn't come immediately though, as Nigel Thomas's team continued to repel Goodwick's attacking instincts and with 25 minutes remaining, a victory for the home side was on the cards, yet when the equaliser came with 15 minutes to go, the shift in power weighted on the visitors' side and they scored the winner soon after.
Narberth didn't get off to the best start in the game as they conceded a goal within the first minute, yet they settled down to play some attractive football that resulted in a goal apiece for Jordan Williams and Adi Jones.
They were on top, of that there was no doubt, and then the injury-plagued team was hit again as Blewitt limped off and Goodwick went away with the points.
"It wasn't a great game, it was scrappy in parts," said manager Thomas. "I feel we should have got a point from it, but they took them instead. It's frustrating, but that's football."
How Kilgetty could do with some points of their own after they went down to their seventh consecutive defeat following a 13-3 loss at home to Haverfordwest County.
The league leaders were so dominant that every move they made up field could have resulted in a goal, yet Christian Phillips pulled off some good saves to deny them.
It was 5-1 at the break, with the home team's solitary score coming from a Dave Jones penalty.
Jones added another after the break, a fabulous shot from 25 yards, with Ryan Howells grabbing the other, yet the visitors had the final say by scoring eight past the home team's defence.
"They just didn't give up throughout the game," said Kilgetty manager Norman James. "Even when they hit double figures they kept coming at us right until the end. They are the best team we have played all season and will definitely finish in the top two or three."
One team that's capable of finishing in the top two or three is Tenby. Their 5-1 win over Pennar Robins helped secure their fourth victory of the season, although they didn't get moving until the second half.
"It was nip and tuck in the first half," said manager Mike Lewis. "Jake Roberts kept us in it with some good saves and then Alex Harley's goal gave us momentum."
Harley's 25-yard strike boosted the visitors to such an extent that four further goals were scored, with Mike Boswell and Jordan Richards both ending with two apiece.
Carew had to dig deep to secure a 3-1 away win at Lamphey as the home side caused numerous problems early on. Adam Hughes scored a goal against the run of play for the visitors to make it 1-0 at the break, before Nielson Cole added a second prior to Haydn Shapcott securing the points with a penalty towards the end.
Lamphey responded with a consolation score straight from the re-start, but there was no time to come back and the points went with the visitors. Paul Bullock said it was a fair result.
"We didn't get going for the first 20 minutes. We had chances, but failed to take them and they made it hard for us, but we dug in and deserved the win."
St. Clears lost 2-0 away at Monkton Swifts, yet manager Charlie Smith saw enough grit in his team to suggest there were positives to come from it.
Tom Howells and Gareth Griffiths came in for praise from the manager and so too did 'keeper Peter Griffiths, who made some fabulous saves to deny the home side any further goals after they went into the break 2-0 up.
"It was a good performance by us actually," said Smith. "They are the best side we have faced this year and I've no doubt they will earn promotion. We didn't create that much to be honest, but we kept battling and kept going and showed great commitment and the boys can take positives from that."
Pendine entertained Milford United, yet the home side finished the game with nothing except a solitary score by Nathan Davies as they lost 5-1 against one of the Second Division's finest sides.
Saundersfoot's results haven't gone their way this season, despite having chances to win games, and Saturday was no exception. They were 2-0 down at home against St. Ishmaels at half-time, but the scoreline didn't reflect the state of play.
"We keep letting teams get the advantage," said manager Andrew Spencer. "We're capable of winning this league, but getting everyone to play together is the problem. We should have won this game."
As it happens they had to settle for a share of the spoils as Ross Gray and Richard Cope helped draw the sides level, although a couple of missed chances later on cost them the chance of victory.
In Division Three, Narberth Seconds lost 5-2 away at Pembroke Boro. Marc O'Sullivan and Tony Evans got the visitors' goals, although the home side, having been strengthened this year with new signings, were just too good for them on the day.
A Paul Maytum strike wasn't enough to prevent Manorbier United going down 4-1 away at Hakin United, while Tenby Seconds lost their second game of the campaign with a 2-0 home defeat against the Merlins Bridge second team
Elsewhere, in Division Four, a brace by Robbie Beynon and a Phil Stacker score were enough to see Kilgetty Seconds win away at Camrose, while Grant Hardy's hat-trick and a Jack Sayers goal were enough for Saundersfoot Sports' Reserves to claim a 4-4 draw away at Camrose.
Meanwhile, St Clears' Seconds won 4-1 at home to their counterparts from Letterston.
Simon Bancroft was at it again, scoring three, while Jason Owens grabbed the other in one of their most dominant performances in recent years.