Sycerika McMahon finished day one of the Irish Swimming Championships in Limerick with four gold medals.

The European medallist dominated in the 100m freestyle (57.45), 200m Butterfly (2:18.79), 100m breaststroke (1:12.42) and 400m individual medley (4:55.53).

NAC swimmer Brian O’Sullivan (27.36) was the first Irish champion of 2013 as he picked up gold in the men’s 50m backstroke final. O’Sullivan (52.89) then went on to win bronze in the 100m freestyle decider minutes later, beaten by Curtis Coulter (51.87) of Ards and Brian O’Sullivan (52.45) AURA Dundalk SC.

Barry Murphy (1:05.62), representing Aer Lingus SC won the 100m breaststroke with teammate Ben Griffin (1:07.42) in second.

In the men’s 200m Butterfly, Brendan Hyland who swims out of the National Aquatic Centre High Performance Centre in Dublin touched in first in 2:01.92, followed by David O’Sullivan (Galway) in 2:05.67.