The DIRTY WEEKEND AHEAD: 30th and 31st of January

The Fourth round of the 2016 Monster Energy Supercross Championship heads to Oakland and the O.co Coliseum in Oakland, California.

IN the SX class it is Red Bull KTM's Ryan Dungey who continues to hold the championship leaders red plate after back to back wins at rounds two and three.

Aussie Chad Reed for the second straight round finished second to Dungey at A2 last weekend, elevating himself to second in the championship standings in the process.

Both Eli Tomac and Ken Roczen improved again at round three with the two riders working through the field to be on the back wheel of Reed with a lap to go, before a small fall from Tomac left him to record his third straight fourth place finish, while Roczen found the podium for the first time in 2016.

There are Three Suzuki riders to keep an eye out for the weekend with both the Yoshimura RM-Z450's of James Stewart and Blake Baggett expected to return to tracing action, while over at the RCH camp, Jake Weimer has joined the team for the remainder of the Supercross season.

While a handful of riders return to action, Red Bull KTM's Dean Wilson joins the injury list, being ruled out of the remainder of the 2016 season after sustaining a knee injury at A2 during qualifying.

For Aussie fans, DPH Yamaha's Lawson Bopping will be aiming to make his third main event appearance after what has been a very impressive start to the 2016 SX Season.