news of cheik tiote, who has died at the age of 30.for you later in the programme. the quarterfinals have been decided in both the men's and women's singles at the french open. andy murray is safely through to the last eight after easing past the rising russian star karen khachanov. nick parrott reports. like an army, andy murray appears to march on his stomach, bringing enough food to fuel a lengthy encounter against karen khachanov. but it looks like there would be plenty left over, as he quickly got down to business. his 21—year—old opponent is tipped for a big future. at six feet six inches tall, you would expect his game to be all about power, but it was his deft touch that challenged andy murray. but one of the reasons there is more than 50 places in the rankings between them was clear. while murray's errors were few and far between, khachanov‘s inexperienced show. the britain isn't yet back to his best but when he stumbled he soon recovered. on occasions he was broken in the second and third sets but he hit back immediately. a b