From our Olympics correspondent in Paris – Ukrainian swimmer Mykhailo Serbin, who competes in the classification for athletes with the highest level of visual impairment, defended his Tokyo title at Paris’s La Défense Arena on Sunday by winning the S11 men’s 100m backstroke, with his countryman Danylo Chufarov picking up the bronze behind him.
A row of sentinels stands at either end of the pool, a staff held lance-like in their hands. Each ends differently; some are topped by a lump of wadded padding, others a waterproof plastic ball. The sentinels, too, are utterly unalike, each one decked out in the colours of a different country. Each one, known as a "tapper", is here for just one person.
