England cyclist Matt Walls has been taken to hospital after crashing his bike into the crowd at the Commonwealth Games.
Several spectators were also left needing medical treatment after Walls and his bike flew over the velodrome barrier.
The 24-year-old was competing in the scratch race qualifying at the Lee Valley VeloPark in Stratford, east London, built for the 2012 Olympics.
Walls was trying to avoid riders who had fallen off their bikes in a pile-up lower down the banking, but appeared to lose control of his bike as he clipped another wheel, and went over the top.
Canadian Derek Gee also surfed the top of the safety barrier, but managed to avoid following Walls into the stands.
Officials from several teams sprinted towards the stricken riders after the crash, on the final lap of the second qualifying heat.
Walls received treatment for more than 40 minutes before being taken away by ambulance. Gee was also taken to hospital, as was Matt Bostock, from the Isle of Man, who sustained head and shoulder injuries in the initial crash.
British Cycling said: “Following a crash in the men’s scratch, Matt Walls and Matt Bostock are being treated by medics before being taken to hospital for further treatment.
“We send our best wishes to the riders and spectators involved in the incident, and will provide a further update when we can.”
British Cycling later added: “Following medical treatment in hospital, Matt Walls has been discharged with stitches in his forehead, but thankfully no major injuries. Our best wishes go to all riders and spectators involved in the crash and thanks go to the medical teams for their expert care.”
The morning session was abandoned after the incident, with spectators in the venue asked to leave following the crash. The afternoon session proceeded as planned after a delay, however.
One man in the crowd received treatment for cuts to his arm while a young girl also received minor attention, officials said.
Canadian Mathias Guillemette was disqualified over the initial crash.
A Birmingham 2022 spokesperson said: “Following a crash at the morning session of track and para track cycling at the Lee Valley VeloPark, three cyclists and two spectators have been treated by the onsite medical team.
“The three cyclists have been taken to hospital. The two spectators did not require hospital treatment.
“We would like to send our best wishes to the cyclists and spectators involved in this incident and to thank the medical team for their swift action.”