The 12th and final round of the 2019 Lucas Oil Pro Motocross Championship is mere hours away, and unfortunately many of the series' most well-known names will be forced to watch the action unfold from the sidelines due to varying ailments.

The slew of injured riders primarily comes from the 250 Class. Over the course of the summer as they continue to battle through the tough conditions of American motocross' legendary tracks, virtually every competitor picks up some bumps and bruises along the way. For many, they continue to fight through the pain and keep battling through adversity. However, for others it simply makes more sense to sit idle and allow their body to get the much-needed rest it deserves.

Sean Cantrell
The Troy Lee Designs/Red Bull/KTM rider recently underwent surgery to fix an injury to his wrist suffered several months ago, prior to the start of Pro Motocross. Cantrell was able to soldier through four rounds, including last weekend at Budds Creek, but the time was now to get on the mend in preparation for the 2020 season.

DerekDrake
The youngest member of Troy Lee Designs/Red Bull/KTM enjoyed several bright spots throughout his rookie season, but he also endured through the ups and downs of the sport's highest level. At the Spring Creek National he suffered an ankle injury that he continued to race through, but he aggravated it to an even more severe extent at Budds Creek and will forced to miss Ironman and allow plenty of time for it to heal.

Jacob Hayes
The veteran out of North Carolina has been a fixture in the battle for the top 10 throughout the season for Cycle Trader/Rock River Yamaha. Unfortunately, he suffered a knee injury at the Unadilla National that not only forced him to miss the second moto in New York, but also caused him to miss Budds Creek. He was hopeful that the weekend off would allow him to race the Ironman National, but Hayes will be one of the many watching the action from home.

Colt Nichols
The biggest news from the contingent of riders that will be missing the action at Ironman surrounded Colt Nichols. The Monster Energy/Star/Yamaha Racing rider was in position to finish fourth in the final 250 Class standings, which would have capped off a hugely successful summer for the Yamaha squad, but a scary crash at Budds Creek left Nichols with an unspecified injury that will keep him out for the season finale.

Hunter Lawrence
The first-year U.S. rider announced late via social media that he will miss the action at Ironman. Lawrence made an anticipated return to action after suffering a broken collarbone earlier this summer, but unfortunately his solid debut in 2019 will come to a premature end with an apparent leg injury suffered during training this past week.