All eyes were on the 23-year-old in the final over of the weekend's thrilling first grade clash in the penultimate round of T20 competition.

Valley required eight runs off the final three balls and failure was not an option after PCH had claimed the past two head to head clashes as underdogs (including last year's drought breaking grand final).

Enter Winsor.

The former PCH utility found back to back boundaries on Cook Park 1 to level the scores prior to the final ball.

At 3:07pm he would then make it three in a row and, more importantly, guide his side to a memorable T20 victory (see video).

The efforts of his teammates Isaac Barry (3/26) and Tristan Muir (3/15) were also recognised in the opening innings.

MEANWHILE JPC celebrated back to back wins when chasing down Creeks in the remaining first grade fixture.

Both sides remained in the finals race following victories in Round 3 to set up a blockbuster at Cook 3.

JPC made the first statement when dismissing Hamid Arain, Dan Murphy and marque recruit Owen Daley in the opening six overs.

Creeks duo Bayden Mullholland and Clinton Harman rectified the side's efforts with 52 and 51 respectively.

The target was then set 129 thanks to a late Dan Tracey boundary.

Yet it would be JPC's day thanks to opener Jack Turner (45) and reigning SDCA first grade player of the year Shane Givney (28no).

JPC will now take on Valley in a T20 grand final rematch while Creeks should do enough to defeat bottom of the table side Glendon.

Valley 6/123 (Brendan Nichols 30no, Daniel Storey 26, Tristan Muir 3/15, Isaac Barry 3/26, Brendan Nichols 2/27) defeated PCH 119 (Danuel Bell 23, Jake Daniels 15, Barton Jones 2/11, Luke Knight 2/14, Jake Mackaway 1/4)

JPC 3/133 (Jack Turner 45, Shane Givney 28, Josh Harvey 2/20, Jacob O'Hara 2/25) defeated Creeks 6/129 (Bayden Mulholland 52, Clint Harman 51, Blake Cook 2/27, Owen Daley 1/25)

Valley - 10

JPC - 8

PCH - 6

Creeks - 6

Glendon - 2

Reigning premier Valley has booked a spot in a second straight grand final thanks to a dominant performance against Denman at Cook Park 4.

Chris Howard led the way in the opening innings with 45 runs before holding off the visitors in the second half.

Denman can still make the grand final if they are able to hold off an in form Creeks at home this weekend.

Creeks climbed up the ladder thanks to a Cale Rainey masterclass on Saturday before Tristan Pitcher (3/8) and Jarrod Campbell (2/7) put the icing on the cake at Cook Park 2.

"Fingers crossed availability is strong this week given the circumstances of the games," Creeks spiritual leader Dan Tracey declared on Sunday.

Valley and JPC will playoff in the remaining fixture this weekend.

Valley 7/102 (Chris Howard 45, Brennan Whittington 26, Glenn Russell 2/13, Matt Maher 1/14, Brad Maher 1/14) defeated Denman 6/99 (Jake McCormick 40, Daniel Wojcikewycz 16no, Jacob McCormick 3/13, Jack Waters 2/9, Marcus Baker 2/21)

Creeks 2/175 (Cale Rainey 81, Billy Newman 34, Tristan Pitcher 3/8, Jarrod Campbell 2/7) defeated PCH 93 (Travis Batch 31, Mark Rowling 23no, Chris Ryan 2/31, Scott Matthews 0/25)

Valley - 12

Creeks - 6

Denman - 6

JPC - 6

PCH - 2

Denman and Glendon will play off for the remaining grand final spot when the two clubs face off in this week's third grade competition.

The winner will face off against minor premier JPC who celebrated a convincing win over arch rival Valley on Saturday.

Creeks and Valley will play off for third spot while JPC and PCH are scheduled to play off in the top versus bottom dead rubber.

Denman 6/122 (Aaron Murrell 39, Shaun Guilfoyle 25, Josh Kelly 2/18, Brad Ellis 1/17) defeated Creeks 5/98 (John Hipwell 34, Cody Palmer 23no, Hayden Bourke 3/24, John Hipwell 2/28)

JPC 9/93 (Robie Hedges 21, Luke Dempster 10, Dave Hornby 4/9, Luke Dempster 3/11) defeated Valley 9/69 (Jason Newberry 14, Marcus Rowe 9, Terry Howard 4/20, Rick Jarvis 2/13)

Glendon defeated PCH by forfeit

JPC - 14

Glendon - 10

Denman - 10

Valley - 6

Creeks - 6

PCH - 2

Isaac Barry (SDCA - JBS) - 84

Cale Rainey (Creeks) - 81

Beau Parnell (SDCA - JBS) - 55

Bayden Mulholland (Creeks) - 52

Clinton Harman (Creeks) - 51

Dave Hornby (JPC) - 4/9

Terry Howard (Valley) - 4/20

Tristan Pitcher (Creeks) - 3/8

Jacob McCormick (Denman) - 3/13

Tristan Muir (Valley) - 3/15