England v Sri Lanka: Root reaches history

Jonathan Agnew is alongside Alastair Cook and Michael Vaughan at Lord's for reaction to Joe Root hitting his 34th hundred, taking him past Cook's record, and helping England take control of the second test against Sri Lanka. They discuss Root, Ollie Pope's management of the game situation with bad light stopping play, and how test cricket can adapt to be able to keep playing in darker conditions.Root says he's "still got a lot of work to do" despite hitting his record 34th century.Plus, Isa Guha, Steven Finn, Phil Tufnell & Andy Zaltzman take a look through what has made Root's career so impressive.