Bundled out at the same stage last season, the Blues were clinical at a marinated KGV and held the Magpies to their lowest score since 2013 to win 12.16 (88) to 4.4 (28).

Launceston's star-studded midfield was dominant around the ground, keeping the likes of Ben Kamaric, Rhys Mott and ex-Blue Sam Rundle quiet, while Dylan Riley (six goals) enjoyed his best outing since returning to the club.

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"I was just really pleased that we played the right way and continued to build on the brand we've tried to build throughout the year," Blues coach Mitch Thorp said.

"I thought our midfield was as good as it's been all year.

"[Hamish] Leedham, [Jobi] Harper, [Fletcher] Seymour and [Tim] Bristow in particular - their work rate, tenacity and desperation was as good as I've seen at this level of footy for any team I've coached."

Both sides withdrew tough midfielders before the game with Jack Donnellan and Pie Zac Webster replaced by young pair Toby Lucas and Braydon Patterson.

Extra time in the development league final delayed the start by half an hour but when the siren sounded, the Blues were on song.

Jay Blackberry (two goals) played all around the ground in one of his most prolific showings of 2019 while Ben Killalea, Jared Dakin and Brendan Taylor all enjoyed good moments.

Riley kicked his half-dozen from contested marks, freakish snaps and holding the ball free-kicks, and single-handedly led Glenorchy for nearly three quarters.

ELSEWHERE IN SPORT

"He's very special, he can catch above his head but he's equally as good at ground level," Thorp said.

"He had 10 tackles and I think that shows what we're trying to build - not only do we need to do our offensive stuff, but we need to make sure we all defend, all chase and tackle and he was fantastic."

The win was not without injury concerns, with young duo Jack Tuthill and James Gillow both pulling up sore.

Tuthill did a brilliant shut-down job on Jaye Bowden before coming off with a corked quad, but like Gillow (corked hip) is expected to be fine for next week's preliminary final.

The news was not so good for Lucas, who took a heavy hit after collecting Riley and Ben Arnold while running back with the flight of the ball in the second quarter.

The 18-year-old played no further part in the game after laying on the ground for nearly a minute post-collision, but was able to celebrate with his teammates in the rooms post-game.

"His courage to go back with the flight and not have any regard for his own health was quite inspiring and I reckon his teammates lifted once they saw how sick he was because he won't play again this year," Thorp said.

"It was a pretty serious hit so I'm full of admiration for him as well."

The Blues will meet the loser of Sunday's clash between North Launceston and Lauderdale in next weekend's preliminary final.

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