Sycerika McMahon and Barry Murphy stole the headlines on the first day of the Irish National Short Course Swimming Championships at LaganValley Leisureplex, Lisburn.

European Junior medallist McMahon was in great form, breaking the senior 100m breaststroke, the 200m individual medley and the junior 200m butterfly record, while picking up three gold medals.

McMahon won the heats of the 100m breaststroke comfortably in the morning in a time of 1:09.27 before breaking her own Irish senior record (1:07.93) in the final in a time of 1:07.83.

The Leander swimmer followed that up with a record breaking swim in the 200m butterfly final clocking 2:13.52, before breaking Grainne Murphy’s 200m individual medley record of 2:12.86, finishing in 2:12.41. The 16-year-old finished day one with a hat trick of gold medals and competes again tomorrow in five more events.

Swimming for Aer Lingus SC, Olympic qualifier Murphy returned to the pool and posted a new Irish senior men's record and secured four gold medals.

Murphy put in a fantastic performance in the 100m butterfly to ensure gold and set a new Irish senior record time of 53.34 (previously held by Steven McQuillan 54.06). Murphy then went on to win the 50m breaststroke (27.53) and 100m individual medley (55.71).

Murphy picked up his fourth medal of the day in the men’s 4x50m medley team relay. Swimming with team mates Sean O’Brien, Conor Turner and Andrew Meegan, the Aer Lingus team claimed gold in 1:47.42.

The four-day event runs until Sunday with heats starting at 9.30am and finals commencing at 4.30pm.