|Venue: Tokyo, Japan Events: August 24-September 5 Time in Tokyo: BST +8
|Cover: Follow on Radio 5 Live and on the BBC Sports website
Sarah Storey turned 15.
She beat teammate Crystal Lane-Wright in the finals and retained her C5 3,000m individual pursuit crown after beating her own world best in qualifying.
The 43-year-old is just one behind Mike Kenny’s British record of 16 gold medals.
There was also silver for the tandem pair Steve Bate and Adam Duggleby in the pursuit B 4,000 m.
Bate and Duggleby were defending champions, but Dutch couple Tristan Bangma and Patrick Bos, who set world records in qualifying, caught up with the British in the final.
However, the opening day of the action at the Izu Velodrome belonged to Storey. She started the finals with determination and caught up with Lane-Wright after 1,750 m of her race.
Next, Storey will go in the C5 road time trial on Tuesday – another event she is the defending champion in – ahead of the road race on Thursday, September 2.
Storey, who was born without a fully functioning left hand, began her career as a swimmer in Barcelona in 1992 and competed in four games, winning 15 Paralympic medals, including five gold, before switching to cycling in 2005.
Since then she has been virtually unbeatable both on the track and on the road and her qualifying time of three minutes 27.057 seconds was almost four seconds faster than the world record she set in Rio.
It is Lane-Wright’s second silver medal in consecutive games in the event.