Bill O'Herlihy introduces coverage of this evening's athletics at the Olympic Stadium, where a further six gold medals will be decided in the men's 4x400m relay and pole vault, and the women's 1500m, 5,000m, 4x100m relay and hammer. The first round of the women's 4x400m relay is also set to take place, with Jessie Barr, Claire Bergin, Michelle Carey, Caitriona Cuddihy, Joanne Cuddihy and Marian Heffernan the athletes available to represent Ireland. All going well, away from the track, the men's boxing semi-finals continue in another five weight divisions. If you'd prefer to watch Gary Lineker for some unfathomable reason, there's coverage on BBC1 also from 7pm.