The United States Motocross Championships headed east to Muddy Creek Raceway in Tennessee for the fourth round of the season at the weekend and, just one week after taking over control of the 450 Class championship with his first overall win of 2015, KTM’s Ryan Dungey made it back-to-back victories.

Dungey dominated on Saturday with a consistent 1-2 score-card.

In the 250 Class, defending champion and current points leader Jeremy Martin raced to his third win of the season following a 2-1 effort aboard his Yamaha.

In the first 450cc moto of the day, Justin Barcia grabbed the holeshot but crashed on the opening lap of the race, handing the lead over to his JGR Yamaha team-mate Phil Nicoletti. Nicoletti led the first two laps of the race, but behind him Dungey had worked his way around Jason Anderson for second and was on the attack.

Dungey aired it out over one of the track’s biggest jumps, using the momentum to move past Nicoletti into the lead, and from there he would open up a comfortable gap and win the moto.

Nicoletti lost two more spots to Anderson and Germany’s defending champion Ken Roczen and would finish fourth on his Suzuki.

In front of him, Roczen challenged Anderson for second, but Anderson eventually pulled away from the defending champion to earn a career-best moto finish. Roczen would settle for third in the moto, a result which would prove costly later in the day.

The second moto was all about Roczen though – he edged out Cole Seely for the holeshot and from there went unchallenged for the rest of the moto, even as rain began to fall midway through the race, and won by nearly nine seconds.

The moto win was Roczen’s first of the season, however it would not be enough to get him the overall victory, as Dungey bounced back from a poor start in the second moto to work his way up to second place. Although Dungey was unable to catch Roczen, his 1-2 results put him on top of the leaderboard for the overall standings on the day. Roczen (3-1) ended up second overall.

Behind Roczen and Dungey, a trio of rookies battled for positions in race two, with Blake Baggett, Anderson and Seely rounding out the top five. Anderson’s 2-4 moto finishes landed him on the podium in third overall for the second time this season.

After winning the 450 Class championship last year, Roczen struggled early this season after being crippled by a back injury right before the first round.

The young German has improved each week since then and is returning to form, however he is currently 37 points behind Dungey in the championship standings thanks to his slow start.

With Eli Tomac out for the rest of the season after a dominant start, it looks like Dungey versus Roczen will be a recurring theme for the next eight rounds.

Lucas Oil Pro Motocross resumes next Saturday, June 13 at High Point Raceway.

Results from Red Bull Tennessee National at Muddy Creek Raceway – Blountville, Tennessee

Round 4 of 12:

450 Class (Moto Finish):

1. Ryan Dungey, Belle Plaine, Minn., KTM (1-2)
2. Ken Roczen, Germany, Suzuki (3-1)
3. Jason Anderson, Edgewood, N.M., Husqvarna (2-4)
4. Blake Baggett, Grand Terrace, Calif., Suzuki (5-3)
5. Phil Nicoletti, Cohocton, N.Y., Yamaha (4-9)
6. Cole Seely, Laguna Beach, Calif., Honda (8-5)
7. Broc Tickle, Holly, Mich., Suzuki (7-7)
8. Justin Barcia, Monroe, N.Y., Yamaha (9-6)
9. Weston Peick, Wildomar, Calif., Yamaha (6-11)
10. Justin Brayton, Fort Dodge, Iowa, KTM (11-8)

450 Class Championship Standings:

1. Ryan Dungey, Belle Plaine, Minn., KTM, 175
2. Ken Roczen, Germany, Suzuki, 138
3. Blake Baggett, Grand Terrace, Calif., Suzuki, 135
4. Eli Tomac, Cortez, Colo., Honda, 125
5. Justin Barcia, Monroe, N.Y., Yamaha, 114
6. Jason Anderson, Edgewood, N.M., Husqvarna, 112
7. Weston Peick, Wildomar, Calif., Yamaha, 104
8. Broc Tickle, Holly, Mich., Suzuki, 103
9. Phil Nicoletti, Cohocton, N.Y., Yamaha, 92
10. Cole Seely, Laguna Beach, Calif., Honda, 79

250 Class (Moto Finish):

1. Jeremy Martin, Millville, Minn., Yamaha (2-1)
2. Marvin Musquin, France, KTM (1-4)
3. Jessy Nelson, Paso Robles, Calif., KTM (3-2)
4. Adam Cianciarulo, Port Orange, Fla., Kawasaki (5-3)
5. Joey Savatgy, Thomasville, Ga., Kawasaki (4-11)
6. Aaron Plessinger, Hamilton, Ohio, Yamaha (8-7)
7. Chris Alldredge, Powell Butte, Ore., Kawasaki (7-8)
8. RJ Hampshire, Hudson, Fla., Honda (11-5)
9. Zach Osborne, Abingdon, Va., Husqvarna (9-9)
10. Matt Bisceglia, Tualatin, Ore., Honda (6-13)

250 Class Championship Standings:

1. Jeremy Martin, Millville, Minn., Yamaha, 175
2. Marvin Musquin, France, KTM, 169
3. Jessy Nelson, Paso Robles, Calif., KTM, 122
4. Adam Cianciarulo, Port Orange, Fla., Kawasaki, 112
5. Joey Savatgy, Thomasville, Ga., Kawasaki, 100
6. Zach Osborne, Abingdon, Va., Husqvarna, 91
7. Chris Alldredge, Powell Butte, Ore., Kawasaki, 89
8. Shane McElrath, Canton, N.C., KTM, 87
9. Matt Bisceglia, Tualatin, Ore., Honda, 87
10. RJ Hampshire, Hudson, Fla., Honda, 85