Michael Johnson, the 400m world record holder, travels to Jamaica to meet Usain Bolt for a BBC documentary to be broadcast on Saturday, and explains how the 100m and 200m world record holder could run even faster.

SUMMER OF ATHLETICS BEGINS
14 May:Diamond League first meeting, Doha 1700-1900 BST live on BBC Red Button and BBC Sport website (UK users only); coverage on BBC Radio 5 live

15 May:Michael Johnson meets Usain Bolt: The Fastest Man Who Has Ever Lived 1710 BST on BBC Two

16 May:Great Manchester Run and Great City Games 1000-1130 BST and 1630-1800 BST live on BBC Two and BBC Sport website (UK users only); updates on BBC Radio 5 live

19 May: Usain Bolt's season debut at Daegu Pre-Championships, South Korea 1055-1345 BST live on BBC Red Button (UK users only)