Former New Zealand captain Brendon McCullum announces retirement from all cricket

Former New Zealand captain Brendon McCullum has announced his retirement from all cricket at the age of 37.

The keeper-batsman had played as a Twenty20 specialist around the world in recent years, having retired from International Cricket in 2016

His positive approach, which saw him score 19 international hundreds, was a key influence on England's World Cup-winning captain Eoin Morgan.

"I can leave the game knowing left no stone unturned," McCullum said.

McCullum, who scored the fastest test century from only 54 balls in his final match against Australia in February 2016, has just finished playing in the Global T20 in Canada and now plans to move into coaching.