Tasmania has suffered its heaviest defeat so far amid a dismal under-15 national championships on Monday.
The 133-run loss to ACT/NSW Country was the fourth flop in as many appearances.
The Tasmanians were set 309 to win off their 50 overs.
The run chase could have been far worse had Riverside spinner Cooper Anthes not broken up a brutal 105-run seventh wicket partnership.
He dismissed Canberran Lachlan Reid for 89 off 74 balls that included 11 fours.
Anthes earlier got rid of opener Jack Wakely too for 77 in 90 balls, but walked off the ground stinging from his 2-66 from 10 overs.
Opener Nick Williams (46) got Tassie off to a good start, but once that 64-run stand was over wickets fell too easy.
After losing the next nine wickets for 84, Devonport’s Lachlan Cowan added some respectability at No.11 with a run-a-ball 26 towards 175.
On Sunday, Tasmania had been right in the game but lost to NSW Green by 26 runs.
Anthes was on target with the ball in a tournament-best 3-26. The captain ensured the New South Welshmen were restricted to 8-223.
Tomas Pears got off to a flyer with 53 off 51 balls, but Tassie struggled to build partnerships after Williams and Jack Ross paired up for a 46-run stand and 23 each.