Before last season he was coming to terms with running out the snake lollies during breaks probably more often than he would have liked to.
"Last season I got more regular game time and I was doing less and less 12th-man duties.
"I think it always motivates you not to want to run the drinks out because everyone is there to play."
Mathieson's record-breaking domestic effort in one-dayers caught the eye of Black Caps ,selectors who dropped him a line when the New Zealanders were touring England last winter when he was playing for the Sidmouth Cricket Club in Devon, the birthplace of Somerset County CC.
A spate of injuries to the likes of Trent Boult saw Mathieson included in the squad as cover.
"I didn't think I'd get a game so it was quite exciting," says the man who became 158th New Zealand international at Durham, taking the scalp of opener Jason Roy for 12 runs caught Martin Guptill in the final ODI, which the Caps lost by three wickets on Duckworth-Lewis Method to lose the five-match series 3-2.
Nevertheless, Mathieson didn't lose sight of what is required to become a top-gun bowler on the international stage.
His sobering self-assessment for finding himself at the right time and place: "I've got a fair way to go."
Down to earth at a traditionally benign batting McLean Park wicket, he doesn't expect any surprises after CD's televised T20 match there earlier this month.
"I think we know what McLean Park is offering with its short squares and long straights," he says, also aware of what the Andrew Ellis-captained Canterbury will bring bar the odd change in personnel.
While the Heinrich Malan-coached CD have newcomers, including rookie skipper William Young, Mathieson emphasises seasoned highfliers such as Doug Bracewell and Adam Milne weren't in last season's one-day campaign because of international duties.
He sees the irony in Ben Wheeler overcoming his stress-related back injury but perhaps ending up in the Black Caps' equation. Mathieson is managing his own back where a vertebrae "is out a little bit".
The experience of retired captain Kruger van Wyk and English convert Kieran Noema-Barnett is gone but he feels it's always an exciting opportunity to see how the young brigade will respond to defending the title.
However, he echoes the sentiments of Malan that talk in the changing room centred on not going out there from tomorrow to defend a crown but winning it.
"We think you can't rest on your laurels because you have to go out with the intention of beating everyone. You can't think we're defending champions because that won't put you in a good stead."
In his fourth domestic season arriving here from Northern Districts, Mathieson does feel like a senior with the influx of young guns but prefers to see himself more as "a regular now".
BOTH TEAMS
The Devon Hotel Central Districts Stags squad for the two Ford Trophy matches against Canterbury Kings tomorrow at McLean Park, Napier, and the Wellington Firebirds on Wednesday next week at the Basin Reserve, Wellington:
CD STAGS (from): William Young (c, Taranaki) Ajaz Patel (HB), Tom Bruce (Taranaki) Seth Rance (Wairarapa)/Kurt Richards (HB), Josh Clarkson (Nelson), Jesse Ryder (Wairarapa), Dane Cleaver (wk, Manawatu), Bevan Small (Manawatu), Martin Kain (Nelson), Ben Smith (Wanganui), Andrew Mathieson (HB), Blair Tickner (HB).
Coach: Heinrich Malan.
CANTERBURY KINGS (from): Andrew Ellis (c), Tom Latham, Leo Carter, Michael Davidson, Peter Fulton, Todd Astle, Cameron Fletcher (wk), Ronnie Hira, Logan van Beek, Kyle Jamieson, Hamish Bennett, Ed Nuttall.
Coach: Gary Stead.