A gold medal hopeful BMX rider's Olympics may be over after he crashed into a bungling official who ran across the track

• Olympic BMX rider Niek Kimmann crashed in an unlikely manner when an official ran into his path.
• According to AD, the Dutchman sustained a small knee fracture in the on-track fall.
• One of the favorites for gold in the BMX racing, he now may be unable to compete.

Dutchman Niek Kimmann is one of the favorites to win the men's BMX racing event at the Tokyo Olympics.

However, his shot at a gold medal could now be in jeopardy after he crashed into a bungling steward during a practice run on Monday.

Kimmann was travelling at high speed through the BMX course at the Ariake Urban Sports Park when shouts of "Watch out!" were heard from the sideline.

Unbeknown to the 25-year-old, a marshal was crossing the circuit just in front of him. He eventually noticed, but it was too late.

A nasty collision left both men on the concrete, with Kimmann getting back to his feet first to check on the injured marshal.

Kimman said on social media later that day that he had injured his knee during the collision and is unsure as to whether he will be fit for the opening round of the BMX racing on Thursday.

"So this is what happened today," he wrote alongside a video of the crash. "Hit an official that wanted to cross the 2nd straight. Hope the official is O.K.

"My knee is sore, but will do my best to be ready for Thursday! Thanks everyone for the messages, appreciate it!"

According to AD, Kimmann sustained a small knee fracture in the fall.