Monster Energy Factory Yamaha’s Cooper Webb announced on Instagram that he sustained a fractured tibia last night at round 14 of Monster Energy Supercross in Minneapolis.

Webb was landed on in the rhythm section right off the start in the first main event last night and did not return for the final two main events.

In his post, Webb said he has an appointment with doctors on Monday and hopes to know more then.

Below is his full post.

[Update: Monday, April 23]

Over the weekend, Cooper Webb posted an update regarding his injury sustained in Minneapolis. In addition to his fractured tibia, Webb also sustained two fractures in his fibula. He will undergo surgery on Thursday. A return date is not known at this time.