Wallington booked an A2 Grade finals spot after defeating Portarlington on Saturday February 18.
The Wallabies will stay in third spot if they defeat Drysdale in the final round, but will slip to fourth if they lose and Winchelsea defeats Newcomb as expected.
In a game that was much closer than the final scorebook suggests, Wallington emerged triumphant after a successful run chase.
Port was all out for 154 on day one with Cameron Gourley top scoring with 43, but it was the veteran Damien Biemans who made the impact with the ball, taking 5-54 from 24.3 overs in a marathon display.
Shaun Biemans played his part with 3/40 from 16 and Dane Wise-Graham was miserly, conceding just 19 from 15 overs.
Shaun Biemans played well in the middle order for Wallington on day to score 49 from 64 balls, but at 7/131, a close finish looked likely.
At 8/152, still needing three for victory, Matt Sampson-Barnes made sure of it with a superb 93 from 96 as Wallington went on to post 238 all out with Alex Mann the pick of the Demons’ bowlers with 5/48 from 19 overs.
In C Grade, Wallington defeated Queenscliff outright to leap into third spot.
The Wallabies are five points behind second placed Barwon Heads, four points ahead of Drysdale and seven in front of fifth placed Anglesea.
They face top side Armstrong Creek in the final round while Drysdale hosts Jan Juc and Anglesea travels to Barwon Heads. They can finish second with a win and a Barwon Heads loss.
Wallington dismissed Queenscliff for 41 and 110 with Raghav Mehra snaring 6/9 from 13 overs across both innings.
Murray Biemans took 3/11 and 5/43 and Riley Morrsion took 3/26 and 3/44.
Wallington declared at 3/73 from 10 overs in its first innings and was 3/83 in the second when maximum points were brought up.
Wallington’s D Grade side continues to fight the season out, defeating Newcomb.
Newcomb made 8/134 with Ross Currie (2/34), Jonathan Wilson (2/23) and Tom Hall (2/9) among the wickets.
Wallington made the runs with two wickets down and nine overs to spare thanks to an unbeaten 62 from John Dunstan.