In 2010, Eli Tomac became the first rider in the history of the sport to win his professional debut, winning the 250cc AMA 2010 Hangtown Motocross season opener in Rancho Cordova, California. At that time he was riding for Team GeicoHonda. For 2011, Eli ended the 250cc Supercross season with two wins and six podium finishes. Finishing 2nd To Broc Tickle by 6 points in the 250SX West Championship. For 2012, Eli won the 250cc Supercross championship with seven podium finishes and five first place main event wins. For 2013, Eli finishes 2 points behind Ken Roczen in the 250cc Supercross championship with five first place main event wins. He won the AMA Motocross 250cc title with 7 overall wins and 12 out of 12 podium finishes.
2015 Season
Despite injuries in 2014 & 2015, Eli finished second to Ryan Dungey in the 450cc Supercross championship with eleven podium finishes. He started the outdoor motocross season with two overall wins, two overall podiums with five straight moto wins before being sidelined by an injury.
2017 Season
Because of poor results, including a mechanical failure, Eli found himself 29 points behind Supercross points leader Ryan Dungey. Tomac went on to win 8 of the first 14 races finding himself tied for the lead with Dungey at the start of round 15. During race 15 Tomac showed the fans he was the dominant force in 2017 Supercross as he started near the back of the pack and went on to pass almost the entire field, taking the lead and the win from Dungey in the final laps. At the next race, with a 3-point lead over Dungey, Tomac took the lead early but crashed when he lost control of his front wheel on the first lap and fell behind. He made another error later in the race while tying to catch the leaders on the tough and technical track. On the last lap it looked like Tomac would lose the points lead to Dungey but be within five points. In the last lap, Marvin Musquin, KTM Team Member, allegedly pulled over and allowed Dungey to take the win and score an additional three points. Tomac was then facing an eight-point deficit with only one race to go. funny At round 17 in Las Vegas Eli Tomac was in first place but repeatedly slowed and allowed the slower riders including Ryan Dungey to catch up. Dungey passed Tomac numerous times, and each time Tomac re-passed Dungey. In the end Tomac finished 2nd to Dungey's 4th place leaving Tomac 5 points short in the points race for the season. Tomac began his 2017 outdoor campaign with 5 consecutive moto wins and 5 consecutive overall wins. Tomac was a clear favorite to win each week and only finished off of the podium at two of the 12 rounds. Tomac experienced bike issues while leading the first moto at Red Bud which forced him to retire from the moto early. Tomac would eventually come back to win both Spring Creek and Washougal Nationals with a couple of late-race charges in the second motos. Tomac won the 2017 outdoor Motocross title with 470 points over second place Marvin Musquin with 453 points and third place Blake Baggett with 451 points.