Paul O'Donovan and Fintan McCarthy have booked their place in the semi-finals of the men's lightweight double sculls rowing at the Tokyo Olympics.
The Skibbereen duo had four seconds to spare over their rivals in winning their heat and the European champions will be back in action on Tuesday.
The women's four of Aifric Keogh, Eimear Lambe, Fiona Murtagh and Emily Hegarty advanced to the final after placing second in their semi.
While the men's heavyweight double sculls crew of Philip Doyle and Ronan Byrne came through their repechage to qualify for the semi-finals.
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2018 European champion Rhys McClenaghan has eased into the final of the men's pommel horse with a near flawless performance in scoring 15-point-2-6-6.
Kurt Walker is through to the last-16 of the men's featherweight boxing after getting an unanimous decision victory over Spain's Jose Quiles.
Next up for Walker is a meeting with number one seed Mirazizbek Mitzakhalilov on Wednesday.
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There was heartbreak for Jack Woolley in the opening round of the taekwondo.
The Dubliner, who went into the Games as sixth seed, suffered a last-gasp defeat to Argentina's Lucas Guzman.
Woolley's hopes of a gold medal are over but he could still compete for bronze if Guzman reaches the final.
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Ireland are represented in the Women’s Hockey tournament for the first time this lunchtime.
They take on South Africa in their first Pool A game from 1.15.
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In swimming, Ellen Walsh goes in heat-2 of the Women’s 100-metre butterfly.
While Darragh Greene competes in heat-4 of the Men’s 50-metre Breaststroke.
