The 32-year-old left-armer has played 67 first-class matches for Otago and one test for his country but told the Otago Daily Times the 159-run win over Manawatu on Monday was one of the most memorable games in his lengthy career.
"It is right up there," Sewell responded when asked how it rated.
"We're one of the smallest [minor] associations and to get to where we got and even get a challenge in the first place was a big thing.
"It was almost bonus territory up there and the guys really made the most of it."
Victory looked unlikely after a first innings slump left North Otago limping along at 116 for nine.
But Sewell and former Otago wicketkeeper-batsman Duncan Drew rescued the innings with a remarkable last-wicket partnership.
The pair added 93 to help their side reach 207.
It proved to be a pivotal moment in the match.
"I think our experience came into it," Sewell said.
"We're both in our 30s with 10 years of high level cricket behind us ... and we felt if we got 200 we could put them under some pressure."
Sewell's highest first-class score is just 24 but he scored "70ish" in a club match and was determined to stick around with Drew and help him get through to his 100.
Drew was undone shortly after reaching the milestone leaving Sewell undefeated on 37.
"They thought we've got a No 11 out here and all we need to do is get him on strike.
"So we just kept taking all the singles on offer."
Sewell said the team had received a lot of support and text messages from supporters in Oamaru which added to the nerves on the last day.
Judging by the fumes coming from the Hawke Cup, and some of the red-eyed cricketers, the celebration went well.
All-rounder Paul Odell went missing in action when it was time for the team photograph and was later discovered fast asleep on the team bus - see inset.
"It was probably the biggest Monday night I've had," Sewell said.
North Otago has all winter to plan its defence of the Hawke Cup.
