It all comes down to the final race of the Series at the grand finale at the Leederville Super Crit supported by the City of Vincent.

While some of the grades have crowned their winners, others will go down to the final rider crossing the line.

The Leederville Super Crit will also see extra points this weekend, meaning 30 points are on offer for a win.

Mathematically, five riders can win A grade. Bryce Lanigan leads the way on 113 and Scott Sunderland is equal second with Craig Wiggins on 102.

Both Lanigan and Sunderland will not be racing this weekend meaning Craig Wiggins needs 12 points to overtake these two WA guns.

Timothy Sellar and Stephen Hall are outside chances on 89 and 86 points respectively.

Hall has not won a round of the series so far and could be saving his best for last.

Emily Mascaro has an 11-point lead over Natalie Britz – who claimed victory at Rockingham to edge close to the young star.

Mascaro is away this weekend so it is up to Britz to get the job done.

Six riders could take first place in Men’s B, but the evergreen Eddy Hollands is on 104 points and leading after Round Nine in Rockingham.

Daniel Griffiths is on 96 and Joshua Commons and Craig Denham on 95 points. James Derrick is a further five points behind and Mark Matear is on 81.

In women’s B, Danica Wiggins has won the grade.

Her sister Emily needs just two points to wrap up C Grade Women.

Matthew Connan has wrapped up Men’s C on 108 points, 33 ahead of Xiao-Peng Zheng on 75.

Callum Milne has the upper hand in Men’s D Grade. He leads Paul Malatzky by 25 points and is 32 points ahead of Brian Johnson.

In Women’s D, Jazmyn Quick has a 29-point lead lead over Debbie Bertolatti. She requires four points to guarantee the Women’s D Grade Championship title.

Three riders can win E-grade, which is the tightest of all the grades. Ryley Collett leads on 150 points while Jordan Williams is three points behind.

Hayden Ivins is on 138 points and still in the running.

Rusty Wisewould has claimed a win in the under 13s. Rusty has been strong all season and is currently leading Samuel Castle by 45 points.