The biggest news this offseason is Adam Cianciarulo moving up to the factory Kawasaki 450 team and slapping the #9 on his plates. Photo by: Octopi
The 2020 “Silly Season” will be a very mellow one for the 450 class, with only a couple of the top-tier riders making any kind of movements but there are quite a few top-tier 250 riders making changes this offseason. The game of offseason musical chairs has just begun to unfold, but with October announcements right around the corner and a sort of preseason preview at the Monster Energy Cup only a couple of weeks later, things will begin to become a lot clearer.

Below, you can check out our list of what we think we know about who will be where when the music stops at the 202 Anaheim 1 SX.
We will update the list as we know more with parts 2 and 3 as we get closer to A1. If you know think you know something we do not, feel free to post in the comments below.
Red Bull / Factory KTM
#2 Cooper Webb – 450
#25 Marvin Musquin – 450
Rocky Mountain ATV/MC / KTM / WPS
#4 – Blake Baggett – 450
??? #29 – Benny Bloss or Justin Bogle? Maybe both?
Yamaha / Monster Energy / Factory Yamaha
#7 – Aaron Plessinger – 450
#51 – Justin Barcia – 450
Monster Energy / Factory Kawasaki
#3 in SX – #1 in MX – Eli Tomac – 450
#9 – Adam Cianciarulo – 450
HRC / Factory Honda
#94 – Ken Roczen – 450
#10 – Justin Brayton – 450 (SX Only)
#23 – Chase Sexton – 450 (MX Only)

Autotrader / Monster Energy / JGRMX / Suzuki
? #22 – Chad Reed – 450 (SX Only)
? #17 – Joey Savatgy – 450
#26 Alex Martin – 250
Only Alex Martin is only rider 100% confirmed here and as always if Chad Reed is involved, things could change quickly. Rumors are swirling with JGR’s future health with sponsors and Suzuki’s involvement as well.
Smartop / MotoConcepts Racing Team
#27 – Malcolm Stewart – 450SX
#42 – Vince Friese – 450SX
We’ve heard there could be a 3rd rider here. Names like Martin Davalos and Justin Hill have been mentioned
Rockstar Energy Racing / Factory Husqvarna
#15 – Dean Wilson – 450
#16 – Zach Osborne – 450
#21 – Jason Anderson – 450
#24 – RJ Hampshire – 250
#28 – Michael Mosiman – 250
#352 – Jalek Swoll – 250
??? #80 – Thomas Covington – 250 – After a year from hell, Thomas’ bike may not be in the rig despite a two-year deal. Hmmmm, we’re hearing things.
Monster Energy / Pro Circuit / Kawasaki
#29 – Cameron Mcadoo – 250
#36 – Garrett Marchbanks – 250
#52 – Austin Forkner – 250
#54 – Jordon Smith – 250
GEICO / Honda
#23 – Chase Sexton – 250 – (SX Only, 450 Outdoors)
#6 – Jeremy Martin – 250
#39 – Hunter Lawrence – 250
#62 – Christian Craig – 250
#84 – Jo Shimoda – 250
#? – Jett Lawrence still may possibly turn pro and join the team in ’21. At very least, getting his feet wet again outdoors

Yamalube / Star Racing / Yamaha
#12 – Shane McElrath – 250
#13 – Colt Nichols – 250
#14 [#1w] – Dylan Ferrandis – 250
#32 – Justin Cooper – 250
#41 – Ty Materpool – 250
Troy Lee Designs / Red Bull / Lucas Oil / KTM
#30 – Brandon Hartranft – 250
#57 – Derek Drake – 250
#363 – Pierce Brown – 250
#? – Brian Moreau – 250
2020 Top 100 and Career Pro Numbers for AMA Supercross and Motocross
* Career Numbers
** New Career Number for 20201 – 450SX Cooper Webb
1 – 450MX Eli Tomac
1 – 250MX – Adam Cianciarulo
1W Dylan Ferrandis
1E Chase Sexton
2* Cooper Webb
3* Eli Tomac
4* Blake Baggett
6* Jeremy Martin
7* Aaron Plessinger
9**Adam Cianciarulo
10* Justin Brayton
11* Kyle Chisholm
12* Shane McElrath
13 Colt Nichols
14** Dylan Ferrandis
15* Dean Wilson
16* Zach Osborne
17* Joey Savatgy
18* Weston Peick
19* Justin Bogle
20* Broc Tickle
21* Jason Anderson
22* Chad Reed
23* Chase Sexton
24** R.J. Hampshire
25* Marvin Musquin
26* Alex Martin
27* Malcolm Stewart
28 Michael Mosiman
29 Cameron Mcadoo
30 Brandon Hartranft
31 Ty Masterpool
32** Justin Cooper
33* Joshua Grant
34 Fredrik Noren
35 Tyler Bowers
36 Hunter Lawrence
37 Garrett Marchbanks
38 Martin Davalos
39 Kyle Peters
40 Jordan Bailey
41 Mitchell Oldenburg
42 Ben Lamay
43 John Short
44 Kyle Cunningham
45 Jacob Hayes
46* Justin Hill
47 Lorenzo Locurcio
48 Henry Miller
49 Chris Blose
50 Benny Bloss
51* Justin Barcia
52 Austin Forkner
53 James Decotis
54 Jordon Smith
55 Chase Marquier
56 Martin Castelo
57 Justin Starling
58 Derek Drake
59 Sean Cantrell
60 Joshua Osby
61 Mitchell Falk
62 Alex Ray
63 Christian Craig
64 Jess Pettis
65 Vince Friese
66 James Weeks
67 Enzo Lopes
68 Jerry Robin
69 Nick Gaines
70 Carlen Gardner
71 Dylan Merriam
72 Ryan Breece
73 Robbie Wageman
74 Mitchell Harrison
75 Coty Schock
76 Mike Alessi
77 Kevin Moranz
78 Jake Masterpool
79 Isaac Teasdale
80 Thomas Covington
81 Anthony Rodriguez
82 Cade Autenrieth
83 Jett Lawrence
84 Jo Shimoda
85 Cole Martinez
86 Joshua Cartwright
87 Ramyller Alves
88 Logan Karnow
89 Marshal Weltin
90 Killian Auberson
91 Ryan Sipes
92 Austin Politelli
93 Blake Wharton
94* Ken Roczen
95 Carson Brown
96 Justin Thompson
97 Chris Howell
98 Bradley Lionnet
99 Brandon Leith