Mark Cavendish is in contention in The Sir Dave Brailsford Omnium going into the second day of the Revolution Series in Derby after making his long-awaited return to track cycling.

The Manx rider is taking part in the competition as he eyes participation in the format at next summer's Olympic Games in Rio.

He had a low-key start on day one and is currently 16 points off the pace in third place, with Ed Clancy - a bronze medallist in the discipline at London 2012 - leading.

Cavendish, a 26-time Tour de France stage winner, will try to catch up with him and second-placed Mark Stewart in the final three events on Sunday.

The 30-year-old tweeted his thoughts before Saturday's scratch race, individual pursuit and elimination race.

He said: "First time competing in an omnium event for about 15 years today in Derby @RevolutionUK. Just a little bit nervous."

Cavendish was just 11th in the 60-lap scratch race but recovered well and made gains in the other two events to finish on 92 points with Clancy on 108 and Stewart on 94.

Sunday will see riders compete in the time trial, flying lap and points race, with Cavendish also racing separately in the madison.

A total of at least 90 UCI points are required to qualify to race in the World Cup events with Great Britain this season.

Winning in Derby would give Cavendish 90 of those, although road racing remains his priority for now. He is out of contract with his Etixx-QuickStep team at the end of the season.