AMA ATV Motocross Nationals Round #4 - Sunset Ridge MX Walnut, Illinois May 31, 2014

It didn't take long for Wienen to begin making his move forward, moving into the top three on Lap 2 while Hetrick slipped past Rastrelli to become the fourth different leader of the moto. The captivating racing continued on the third lap with Upperman reclaiming the lead. He looked to pull away but was caught by a hard-charging Wienen just a couple laps later as the defending champion assumed control of the moto on Lap 5 and never looked back.

Chad Wienen & Thomas Brown launch over the uphill triple

Brown was on a similar charge forward and eventually slotted into second behind his teammate. The pair asserted themselves out front while a heated battle ensued for the final spot on the podium between Upperman, Hetrick, and BCS Performance Can-Am's Josh Creamer.

Joel Hetrick held the lead in lap two, but he finished moto one in fourth place

Wienen cruised to the moto win and put himself in position to claim the overall while Brown followed in second. Upperman was able to withstand the pressure and maintained his hold on third with Hetrick and Upperman rounding out the top five.

Chad Wienen claimed the Moto 1 Win

Upperman's strong ride carried over into the second moto with the veteran sweeping the SSi Decals Holeshots for the day. This time Upperman maintained control of the lead, but he was under constant pressure from Natalie, Brown, and Wienen. Things were status quo up front through the first five laps until Brown and Wienen started to shake things up by making a push to the front yet again.

Thomas Brown & Josh Upperman Battling for the Moto Two Win

As time wound down in the moto, Brown started to close the gap to Upperman. A three-plus second margin closed to under a second with two laps to go when Brown made one final surge to slip past Upperman on the final lap with just a few turns remaining, stealing the moto win and securing the overall victory in the process.

Thomas Brown made the last lap pass to take the Moto 2 win & the overall win