Image: Supplied.

Rockstar Energy Husqvarna Factory Racing’s Zach Osborne will make his debut in the 450SX category this weekend at Arlington’s seventh round of the 2019 Monster Energy AMA Supercross Championship.

The two-time 250SX East champion suffered a broken collarbone in the lead up the Anaheim 1’s season-opener, prompting him to miss the first six rounds.

He was initially scheduled to return last weekend at Minneapolis, however a suspected crash ahead of the first east coast stop further delayed his return.

Osborne will join Dean Wilson on the factory squad, who’s currently filling in for injured reigning champion Jason Anderson – the number one ruling himself out of the supercross season after crashing heavily during training last month.