The 23-year-old took seven for 22 and six for 31 on the artificial surface at Craddock Park to help his side win by 133 runs.
His match analysis of 13 for 53 was the second-best in North Otago history. John Reid - yep, JR - did slightly better.
He took 13 for 51 against Ashburton County in 1958. Reid played 58 tests for New Zealand and is arguably our greatest all-rounder.
‘‘The artificial in Westport was seamer-friendly, as they say,'' Mostert said.
‘‘As a batsman you were never in and you had to work extremely hard to score runs on that wicket. So as a bowler you were always in the game, so it was nice bowling on it.''
Mostert, who hails from Pretoria and is in his third season with North Otago, is at the top of the pile when it comes to wickets in a season. He has claimed 48 this summer, eclipsing his own record of 29 which he achieved last season.
It has been a tremendous season with the ball for the right arm medium-pacer and he hopes to add to his record when North Otago defends the Hawke Cup against a talented Hawkes Bay team in Oamaru. The game gets under way tomorrow.
‘‘For me personally, I don't like to look at the opposition's team. I just like taking it ball by ball.
‘‘I know they have a couple of decent players but I think coming to Oamaru it will be a different ball game down here.
‘‘It is going to be green and they are normally used to playing on flat decks that don't really do as much.
‘‘I think North Otago will have the upper hand in their own conditions.''
Mostert, who bats at No6 in the order, was lured to Oamaru by fellow South African and team-mate Stephan Grobler and ‘‘since then I've always come back''.
He is employed by North Otago Cricket Association to do some coaching work during the cricket season.
He has played at a level just below first-class cricket in South Africa and would ‘‘love to play at a higher level''.
‘‘I'm still very young so I'll take any chance I can get. Right now I'm enjoying what I am doing, so if I don't go a level up it is OK.
‘‘It would be nice playing a little bit higher so I can really test myself.''
