By John Kenny at the NAC

Alex Murphy of UCD became the fourth Irish swimmer to qualify for the World Championships in Kazan in Russia when he won the men’s 50m breastroke in 27.56 seconds on the opening day of the Irish Open meet at the National Aquatic Centre in Dublin.

Murphy joins Fiona Doyle and Sycerika McMahon for the trip to Kazan. Neither Doyle or McMahon are competing at the NAC this week, preferring to continue their build up at their respective bases in Calgary in Canada and at Texas A&M

Distance swimmer Chris Bryan has also qualified for the Championships.

Tallaght’s Brendan Hyland, who swam for Ireland in last year's European Championships, was hoping to go under his own Irish record in the final of the men’s 200m butterfly as he continued his bid to qualify for the World championships in Russia this August.

However, the 20-year-old was almost two and a half seconds outside the qualification time, which was good enough to take the gold medal, but not sufficient to make the plane for Kazan

London 2012 Olympian Grainne Murphy made a return to Irish domestic swimming and took the gold medal in the Women’s 800m freestyle

The 22-year-old Murphy was competing on the Irish national scene for the first time since the 2013 Irish Short Course National Championships and she powered her way to victory in the distance final at the NAC.

The New Ross swimmer had illness problems back in 2012 which curtailed her London Olympic programme and she also suffered a relapse on her return.

However, despite recording what for her was a modest time Murphy was never really threatened as she won in a time of 8:43.37.

It was a time well outside her own Irish record and she faded somewhat in the back end of the swim, but Murphy was happy to be back competing in Ireland as she continues her rehabilitation having also recently competed in the French Nationals.

She told RTÉ Sport: "8.43, I couldn't be happier. A few weeks ago I went 8.41. I had a really tough week last week. I'm moving in the right direction."

Asked about her Olympic ambitions, Murphy did not want to put any pressure on herself to make that target. She said: "You never know what will happen. If Rio happens it happens, if it’s not, it’s not [to be]."

The expected battle between Murphy and 14-year-old Antoinette Neamt did not materialise as the youngster was beaten into fourth by two visiting US college swimmers Kendall Brent and Lindsay Stone.