The Magpies earned their place in the grand final on Sunday against Strathdale after defeating Katandra earlier in the day at Moama Recreation Reserve.
That followed on from a dominant display against Cobram last month, in the first round of the competition.
But victory against Strathdale proved a bridge too far as the Maristians ran out six wicket winners.
“Strathdale were a very well drilled side who have played a lot of cricket together in the past,” Teasdale said.
“When you compared the two line ups you could see there was a noticeable difference in the level of experience but these types of games are only going to do our players a world of good.
“This tournament is always competitive and we look forward to getting involved in future.”
After being sent into bat by Strathdale, Moama soon found themselves in trouble when openers Anthony McMahon and Brad Jones were dismissed for just one run between them.
Teasdale, Billy Gallagher and Jack Russell provided some resistance in the middle order as the only batsmen to reach double figures as their side limped to 8/106 in 20 overs.
Despite a strong start to Moama's bowling display with Strathdale at 2/25, the Maristians soon found their rhythm to reach the target in just 13.4 overs - losing just four wickets.
Billy Gallagher was the pick of the bowlers with 2/18 from 2.4 overs.