Much still at stake for Team Ireland over next five days
After a disappointing day for Derval O'Rourke yesterday, there is still plenty of interest and action for those following Team Ireland.
It's D-Day for Katie Taylor as victory this afternoon will move her one step closer to landing that ever-elusive Olympic gold medal.
The Bray woman steps into the ring at 2pm to take on Mavzuna Chorieva from Tajikistan in a semi-final.
History is in Katie's favour given that she already beat her opponent earlier this year in the world championship semi-final. But with the hopes of a nation on her shoulders, will she crumble under the strain?
Paddy Barnes will aim to make history by becoming the first Irish boxer to secure two Olympic medals. He enters the ring against India's light flyweight Laishram Devendro Singh (8.45pm). A win guarantees him a bronze medal.
Deirdre Ryan is in action in the high jump (9.30am). Claire Burgin, Michelle Carey, Marian Heffernan and Joanne Cuddihy are likely to be chosen to represent Team Ireland in the women's 4x400m relay (11.35am).
John Joe Nevin is in action against the current bantamweight world champion, Cuban man Lazaro Alvarez Estrada (2pm). The Mullingar man already has a bronze medal in the bag and today's bout is being billed as a real test of his undoubted talent.
And after last night's stunning victory, Belfast's Michael Conlan now will face Cuba's Robeisy Ramirez Carrazana in the semi-final at 8.45pm.
Rob Heffernan, Colin Griffin and Brendan Boyce all participate in the 50km walk (9am).
Laura Reynolds and Olive Loughnane take part in the 20km walk (5pm).
Mark Kenneally will feature in the men's marathon (11am).