It's Kipruto v Bekele at London Marathon

Amos Kipruto of Kenya crosses the line to win the men's elite race at the London Marathon in London.[Courtesy-AP]

The die is cast. Amos Kipruto, the defending champion, must be at his best to stop Ethiopia's Kenenisa Bekele at the 43rd London Marathon showdown on Sunday.

Kipruto, who carries an impressive 2:03.13 personal best to the starting line, will be up against Bekele, the third fastest man in history at 2:01.41.