You can bet on the TwinSpires.com from Washington State but you will be required to provide your social security number. Online sportsbooks licensed outside the state do not have such a requirement and tend to offer much better odds. BetUS (in business since 1994) welcomes customers from Washington and offers a welcome bonus (max bonus $2500).
The regular registration process allows you to place bets immediately using your credit card and requires limited information.
BetUS also offers plenty of Kentucky Derby prop bets and wagering on all major races.
Early Odds to Win the 2021 Kentucky Derby
Kentucky Derby - Big A Morning-Line Odds
| Horse | Odds | Trainer | Jockey |
| Essential Quality | 3/1 | Brad Cox | Luis Saez |
| Rock Your World | 6/1 | John Sadler | Joel Rosario |
| Known Agenda | 8/1 | Todd Pletcher | Irad Ortiz, Jr. |
| Highly Motivated | 10/1 | Chad Brown | Javier Castellano |
| Hot Rod Charlie | 10/1 | Doug O’Neill | Flavien Prat |
| Medina Spirit | 15/1 | Bob Baffert | John Velazquez |
| Midnight Bourbon | 20/1 | Steve Asmussen | Mike Smith |
| Mandaloun | 20/1 | Brad Cox | Florent Geroux |
| Super Stock | 20/1 | Steve Asmussen | Ricardo Santana, Jr. |
| Caddo River | 30/1 | Brad Cox | TBD |
| Sour and Sandwich | 30/1 | Mark Casse | Tyler Gaffalione |
| O Besos | 30/1 | Greg Foley | Marcelino Pedroza |
| Like the King | 40/1 | Wesley Ward | Drayden Van Dyke |
| Bourbonic | 40/1 | Todd Pletcher | Kendrick Carmouche |
| Helium | 40/1 | Mark Casse | Julien Leparoux |
| Dynamic One | 40/1 | Todd Pletcher | Jose Ortiz |
| Sainthood | 50/1 | Todd Pletcher | TBD |
| Hidden Stash | 50/1 | Vicki Oliver | Rafael Bejarano |
| Get Her Number | 50/1 | Peter Miller | TBD |
