Stewart must run 1 in AMA Supercross Class, Reed 1 in 450 Motocross, Dungey must run 1 in in 250 MX & 250 West Supercross (should he run in those classes in 2010), Pourcel must run 1 plate if racing in 250 East Supercross.

With Feld Motor Sports and MX Sports Pro Racing, the American Motorcyclist Association (AMA) has announced the 2010 national numbers for pro-licensed riders in the Monster Energy AMA Supercross, an FIM World Championship, and the Lucas Oil AMA Pro Motocross Championship.

National numbers in the disciplines of Supercross and Motocross are assigned by the following process:

No. 1: The current series champion must run the No. 1 plate in that series.

Nos. 2-9: A champion from the previous competition year may choose a permanent single-digit number if available, with the exception of No. 4. The AMA has reserved No. 4 for exclusive use by Ricky Carmichael through 2011.

Nos. 10-999: Riders who finish in the top 10 in combined championship points in Supercross, Motocross 250 and Motocross 450 competition in the previous competition year have the option to choose a career national two-digit number, if available. These riders, by their option, may instead select a three-digit national number.

Riders who finish outside the top 10 but in the top 100 in combined championship points in Supercross, Motocross 250 and Motocross 450 competition in the previous year will be assigned consecutive two-digit numbers from the available supply until that supply is exhausted.

A comparison of riders’ best moto finishes breaks a tie, unless one of those riders competed in only one discipline. In the case of a tie between a rider who rode one discipline (for example, just Supercross) and a rider who rode both racing disciplines, the tie is broken in favor of the rider who rode both series.

A rider who fails to earn at least one championship point during the season preceding the current season will lose his or her career number and be issued a new number based on current points. Special consideration is given to a rider if an injury impeded participation the previous year.

Note: Lower three-digit competition numbers (100-125) are traditionally held for past or current champions from non-U.S. series who participate in a Monster Energy AMA Supercross, an FIM World Championship, or a Lucas Oil AMA Pro Motocross event.

AMA National Motocross / Supercross Numbers

* Career numbers

** New career numbers for 2010

*2: Ryan Villopoto

*3: Mike Brown

**5: Ryan Dungey (No. 1, Motocross 250 and Supercross Lites West)

*7: James Stewart (No. 1, Supercross)

*8: Grant Langston

*9: Ivan Tedesco

10: Thomas Hahn

*11: Travis Preston

12: Jake Weimer

*13: Heath Voss

*14: Kevin Windham

*15: Timmy Ferry

*16: John Dowd

17: Justin Barcia

*18: Davi Millsaps

19: Tommy Searle

20: Broc Tickle

21: Blake Wharton

*22: Chad Reed (No. 1, Motocross 450)

23: Justin Brayton

*24: Brett Metcalfe

*25: Nate Ramsey

*26: Michael Byrne

*27: Nicholas Wey

28: Tyla Rattray

*29: Andrew Short

30: Cody Cooper

31: Matthew Lemoine

32: Kyle Cunningham

**33: Josh Grant

34: James Albertson

35: Matthew Goerke

36: Darryn Durham

37: Tyler Bowers

38: Trey Canard

39: Ricky Dietrich

40: Jake Moss

41: Kyle Regal

42: Ben Evans

43: Steven Clarke

44: PJ Larsen

45: Austin Stroupe

46: Ryan Sipes

47: Matt Boni

48: Max Anstie

49: William Hahn

50: Alex Martin

51: Paul Carpenter

52: Antonio Balbi

53: Jeff Alessi

54: Jason Lawrence

55: Kyle Chisholm

56: Ben Coisy

57: Jarred Browne

58: Weston Peick

59: Daniel Reardon

*60: Broc Hepler

61: Vince Freise

62: Jason Thomas

63: Sean Borkenhagen

64: Taylor Futrell

65: Troy Adams

66: Blake Baggett

67: Chris Blose

68: Robert Kiniry

69: Adam Chatfield

70: Robby Marshall

71: Kyle Summers

72: Christian Craig

73: Ben Lamay

74: Tucker Hibbert

*75: Josh Hill

76: Martin Davalos

77: Charles J Summey

78: Gavin Gracyk

79: Justin Sipes

80: Billy Laninovich

81: Cole Siebler

82: Jesse Casillas

83: Steve Boniface

84: Michael Hall

85: Scott Champion

86: Bobby Bonds

87: Les Smith

88: Ricky Renner

89: Jacob Marsack

90: Willy Browning

91: Jase Lewis

92: Michael Willard

93: Justin McDonald

94: Ryan Morais

95: Lucas Crespi

96: Josh Hansen

97: Robert Fitch

98: Roberto Castro

99: Topher Ingalls

**377: Christophe Pourcel (No. 1, Supercross Lites East)

*800: Mike Alessi

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