Joe Root 'getting better with age', says England captain Harry Brook

England captain Harry Brook's assessment that Joe Root "is only getting better with age" is likely to send shivers down the spines of bowlers all around the world.

Root surpassed World Cup-winning captain Eoin Morgan to become England's leading run-scorer in one-day internationals during his epic 166 not out against West Indies in Cardiff, a title he also holds in Tests.

He came to the crease in the first over, and withstood all of West Indies' pressure when England were on the ropes at 133-5 in pursuit of 309 to win.

A 98-ball century was raised having barely broken a sweat, reaching it in style with a six and a four, before the Yorkshireman glided into the next gear in his stand of 143 with Will Jacks which saw the helpless bowlers at his mercy.

"He's unbelievable and he's only getting better with age as well," said Brook, who made 47 and added a counter-attacking 85 for the third wicket with Root, who stayed in his skipper's slipstream in a perfectly paced knock.

"He's someone I look up to, he's such an amazing player, such an amazing bloke. He works the hardest out of anyone I've seen.

"Nothing's ever right and he's always trying to get better - he's the perfect role model for any young cricketer out there."