13:15Olympics2012BBC Two: Day 4: 13.15-14.00BBC Sport Duration: 45 minutes Tue 31st Jul 2012, 13:15 on BBC Two Northern IrelandMore action from a busy day where 23 of the 26 Olympic sports are in progress.ContributorsPresenter:Matt BakerDirector:Sally RichardsonGenresSportOlympicsFormatsPerformances & EventsBrandOlympicsSeriesOlympics: 2012 Source: BBC Online