Xavier Crone's return to his home club Strathfieldsaye helped the Jets to an upset win over Strathdale-Maristians in Sunday's BDCA Twenty20 action.
The Victorian squad member took two wickets as the Jets (5-165) held off the Suns by 12 runs at Bell Oval.
The victory was set up earlier in the day by Ben Devanny.
Coming off 140 against Sandhurst on Saturday, Devanny blasted 89 off 52 balls, including nine fours and five sixes, to lift the Jets to 5-165 off their 20 overs.
Suns openers Andrew Chalkey and Ben DeAraugo not only survived Crone's first two-over spell, they gave their side the perfect start.
They took 51 runs off the opening five overs before Chalkley fell for 41 off just 23 balls.
The left-hander tried to reverse sweep spinner Savith Priyan but was bowled.
That sparked a Suns collapse and from 0-51 they fell to 4-70.
Linton Jacobs (37 off 27) threatened to hit the Suns to victory before Crone returned and clean bowled the Strathdale veteran.
Crone also clean bowled Daniel Clohesy for 13 and finished with figures of 2-31 off four overs.
The Suns' tail was left with too much to do. Strathfieldsaye's Stuart Payne (3-30) took three late wickets.
Strathfieldsaye's upset win leaves Kangaroo Flat in the box seat to claim the grand final berth out of pool B.
The Roos are unbeaten in two games and probably only need to win one of its remaining two games against the Suns and White Hills to secure a grand final berth.
The Roos proved too strong for Sandhurst in Sunday's early game at Weeroona Oval.
Kenny Beith (3-14) did the damage with the ball as the Roos restricted Sandhurst to 7-122.
Ben Leed (31) and Shasheen Fernando (29) top-scored in a Sandhurst innings that struggled to gather momentum.
In reply, Kangaroo Flat opener Ben Birkhead went on the attack from ball one and made a quickfire 31 off 18 balls.
Dylan Gibson (29 off 21) and marquee player Matt Underwood (26 off 28) chipped in as the Roos won by six wickets with 20 balls to spare.
White Hills kepts its finals hopes alive by thumping Sandhurst in the afternoon match at Weeroona Oval.
The Dragons struggled to 8-95 off 20 overs against some tight Demon bowling.
Mick Peters (3-16) was the most successful bowler, while teenager Jasper Langley top-scored for the Dragons with 20.
The White Hills innings was all about one man - Brayden Stepien.
The Carlton opener made 70 not out off 50 balls as the Demons won by eight wickets in the 14th over.
Stepien, who made 92 for Carlton on Saturday, hit seven fours and three sixes.
Eaglehawk leads the race for top spot in pool A.
After defeating Bendigo United by one run in round one, the Hawks edged out Golden Square by eight runs on Sunday to be the only unbeaten team in the pool.
Ben Archbold (21) and Josh Williams (20 not out) led the way as the Hawks posted 5-123 off 20 overs.
The Bulldogs bowled 13 wides and extras were top score with 22.
The wayward bowling came back to haunt the Dogs.
Eaglehawk's Rhys Smith (3-11) ripped through the Square top-order before Alex Code and Grant Connelly started a rescue mission.
They gave the Dogs a chance to win the game before Connelly fell for 35 off 28 balls.
Code (44) and Max Grant (21 not out) were Square's last chance, but the Borough total proved too big.
Speedster Richard Tibbett made a welcome return to the Eaglehawk attack and finished with 2-16 off four overs.
After Sunday's play, Golden Square, Huntly-North Epsom and Bendigo United have 1-1 records, while Bendigo is 0-2.
Huntly-North Epsom and Bendigo United ruined Bendigo's T20 campaign by scoring wins over the Goers in the double-header at Atkins Street.
The Goers made 7-129 in the morning game, but that was never going to be enough when Power openers Ryan Grundy (29) and Danushka Wijemanna (51) got their side off to a strong start.
The Power cruised home by four wickets with 15 balls to spare.
The afternoon game was a tighter affair.
Bendigo United made 9-128 thanks largely to 55 from Jake Klemm. Kyle Humphrys (3-10) tied down the Redbacks.
In reply, the Goers were well-placed at 1-42 before they lost 3-10 and the Redbacks regained the momentum.
Kayle Thompson (35 not out) batted well for the Goers in the middle and later overs, but the home side fell 14 runs short at 7-114.
Twenty20 action returns on Tuesday night when Eaglehawk hosts Bendigo in a stand-alone match at Canterbury Park.
The game has been moved forward from the scheduled final round on January 5.
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