Reed wins Pontiac, Langston claims East crown.
Yamaha's Chad Reed has won his fourth THQ AMA Supercross Series race of the season after taking a surprise victory over points leader Ricky Carmichael and the charging James 'Bubba' Stewart on Saturday night at the Pontiac Silverdome in front of 51,142 fans.

Yamaha's Chad Reed has won his fourth THQ AMA Supercross Series race of the season after taking a surprise victory over points leader Ricky Carmichael and the charging James 'Bubba' Stewart on Saturday night at the Pontiac Silverdome in front of 51,142 fans.
Honda's Kevin Windham won the $1,500 Butterfinger Crisp Holeshot Award ahead of Yamaha's Heath Voss then the big three of Reed, Carmichael and Stewart. Carmichael moved into second place on lap 2 but two laps later Stewart crashed, removing himself from the heated battle.
Defending champion Reed then worked his way past Carmichael on lap 12 and passed Windham for the lead on lap 16. RC finished second after passing Windham on lap 17, limiting his points lost.
"That was a great race tonight," said Reed. "I was a little tight at the start and started to get into the groove as the race progressed. This was seriously one of the best races of my career and I am happy to leave with a big win."
Meanwhile, the event also saw the climax of the 125cc East Coast Supercross championship. Kelly Smith claimed the Holeshot, while points leader Grant Langston sat back in eighth on lap 1.
The South African fought his way back to fourth by the finish and, with KTM's Josh Hansen winning the event, the pair were actually tied on 143 points. However, Kawasaki rider Langston got the nod due to his greater number of race wins (three to Hansen's two).
"This was an amazing season for me," said Langston. "Winning the 125cc supercross championship is a milestone in my career."
Suzuki's Davi Millsaps finished second in the race and Honda's Joaquim Rodrigues third.
The event takes place at Seattle's Qwest Field on Saturday, April 16.
Results - 250cc AMA Supercross/World SX GP:
1. Chad Reed - Yamaha
2. Ricky Carmichael - Suzuki
3. Kevin Windham - Honda
4. James Stewart - Kawasaki
5. Mike LaRocco - Honda
6. David Vuillemin - Yamaha
7. Heath Voss - Yamaha
8. Travis Preston - Honda
9. Tim Ferry - Yamaha
10. Ernesto Fonseca - Honda
250cc AMA Supercross standings:
1. Ricky Carmichael - Suzuki, 305
2. Chad Reed - Yamaha, 277
3. Kevin Windham - Honda, 224
4. Mike LaRocco - Honda, 213
5. David Vuillemin - Yamaha, 196
6. Ernesto Fonseca - Honda, 171
7. Sebastien Tortelli - Suzuki, 164
8. Heath Voss - Yamaha, 122
9. Tyler Evans - Suzuki, 106
10. Michael Byrne - Kawasaki, 103
250cc World Supercross GP standings:
1. Ricky Carmichael - Suzuki, 347
2. Mike LaRocco - Honda, 289
3. Sebastien Tortelli - Suzuki, 225
4. Heath Voss - Yamaha, 204
5. Tyler Evans - Suzuki, 197
6. Damon Huffman - Honda, 173
7. Jason Thomas - Honda, 150
8. Tim Ferry - Yamaha, 139
9. Nick Wey - Honda, 136
10. Joe Oehlhof - Honda, 125
Results - 125cc East AMA Supercross:
1. Josh Hansen - KTM
2. Davi Millsaps - Suzuki
3. Joaquim Rodrigues - Honda
4. Grant Langston - Kawasaki
5. Steve Boniface - Honda
6. Kelly Smith - Yamaha
7. Justin Buckelew - Honda
8. Branden Jesseman - Suzuki
9. Josh Grant - Honda
10. Brock Sellards - Yamaha
125cc East AMA Supercross standings:
1. Grant Langston - Kawasaki, 143
2. Josh Hansen - KTM, 143
3. Davi Millsaps - Suzuki, 137
4. Steve Boniface - Honda, 97
5. Kelly Smith - Yamaha, 96
6. Troy Adams - Honda, 78
7. Matt Walker - Kawasaki, 77
8. Josh Grant - Honda, 71
9. Joaquim Rodrigues - Honda, 65
10. Brock Sellards - Yamaha, 64