Jo Shimoda will undergo an MRI this week after sustaining a lower-left leg injury in a multi-rider pileup at the sixth round of the St. Louis Supercross. The Honda HRC Progressive rider was removed from the track by the Alpinestars Mobile Medical Unit, was ruled out for the remainder of the night, did not start the LCQ, and scored zero points in St. Louis.

The crash began when Phoenix Honda rider Evan Ferry went down; Shimoda rolled a section and was clipped in the lower leg by Luke Clout in the first rhythm section, prompting a red flag, and he was seen favoring his left leg after the incident. Alpinestars’ initial on-site assessment found no broken bones but indicated possible ligament damage; Shimoda said Alpinestars medical told him there were no fractures. The MRI has been described as the decisive diagnostic step to confirm or rule out ligament issues and to inform any short-term treatment or recovery timeline, and the team has said its immediate focus is obtaining accurate imaging and a recovery plan that preserves Shimoda’s championship chances.

Team manager Lars Lindstrom said the injury initially looked serious but that he is “more hopeful that it’s only a minor setback,” noting Shimoda could put weight on the foot during initial checks and that putting weight on the foot seemed to be okay. Entering the round Shimoda trailed championship leader Cole Davies by 14 points; after scoring no points in St. Louis he now sits fourth in the 250SX East standings, 36 points behind Davies.

Sources