JDR Motorex KTM's Tye Simmonds won heat one of the Pro Opens. Image: Sport The Library.

Heavy rain lashed the Melbourne Knights Stadium just minutes before the opening ceremonies for round one of the Monster Energy Super X, Australasian Supercross Championships.

The heats have been run and won here in treacherous conditions, with Tye Simmonds (JDR Motorex KTM) and Lawson Bopping (Raceline Pirelli Suzuki) sharing the Pro Open spoils.

Simmonds won heat one after leading from the opening lap, clearing out to win ahead of Jay Marmont (CDR Rockstar Energy Drink Yamaha) and Cheyne Boyd (Carlton Dry Honda Thor Racing).

The second heat saw young gun Bopping win his first Pro Open heat, charging past Billy Mackenzie (Monster Energy Kawasaki) in an entertaining back and forth battle.

Rounding out the top three was Ryan Marmont (JDR Motorex KTM), ahead of American guest Chris Blose on the Hart and Huntington/InsureMyRide Kawasaki.

In the Pro Lites it was Dean Ferris who won the first heat for Monster Energy Kawasaki, finishing ahead of Kirk Gibbs (Serco Yoshimura Yamaha) and British standout Steven Clarke (Motul Pirelli Suzuki).

Heat two saw a dominant performance from American debutant Gavin Faith on the Carlton Dry Honda CRF250R. Faith took over the lead early and won over Matt Moss (JDR Motorex KTM) and Brenden Harrison (JDR Motorex KTM).

In the Under 19s class it was Jake Emanuelli (Hart and Huntington Yamaha) and Joey Savatgy (Raceline Pirelli Suzuki) who won their respective races.

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