3 TO WATCH TODAY

LAURA MUIR: Goes in the 1500m heat at 7.10pm and races the 3,000m final at 9.40pm. KATARINA JOHNSON-THOMPSON: Bidding to regain the pentathlon title she won in 2015.

JAKOB INGEBRIGTSEN: The Norwegian sensation, 18, races the 3,000m heats at 12.30pm.