World Championship 2015: Rudisha stradegy key - Michael Johnson

BBC Sport's Michael Johnson and Dai Greene dissect how Olympic champion David Rudisha won his second world title in the 800m.

The 26-year-old led for much of the race and held off Poland's Adam Kszczot and Bosnia's Amel Tuka to win in one minute 45.84 seconds.

Available to UK users only.