Ireland's Mona McSharry was the fastest qualifier for tomorrow's 100m breaststroke final, while Shane Ryan finished in sixth place in the final of the 100m backstroke at the European Short Course Swimming Championships in Glasgow.
Ryan broke the Irish senior record for the fourth time in a month in 50.42 seconds, but that was scant conciliation for the 26-year-old as he finished outside the medals in his main event.
"I missed a turn and I know I can go much faster," said Ryan after his race, which was won by the Russia's Kliment Kolesnikov in 49.09, with Christian Diener of Germany securing silver and Romania's Robert- Andrei Glinta clinching bronze.
"I was spinning in the water and missed the turn. I didn't know where the wall was and it upset my rhythm and it’s frustrating to know I can go a lot faster."
Ryan still has the 50m breastroke to come, an event in which he is a world bronze medallist, but he described that as a "fun event" as his disappointment was evident after the 100m swim.
Contrast that with 19-year-old McSharry, the European 50m breaststroke bronze medallist, who is now the gold medal favourite after the semi-finals of the 100m breaststroke.
McSharry, from Sligo, who swims out of the tiny Marlins Swimming Club in Donegal, produced an outstanding performance to win her semi-final in a world class time of 1:04.36.
That time set a new Irish record and was 0.27 faster than the rest of the field ahead of tomorrow evening’s final.
Niamh Coyne didn't advance, after finishing in eighth place.
Earlier, Eoin Corby of Limerick set a new Irish junior record in the heats of the 100m breaststroke in 59.63, not fast enough, however, to make the top 16.
The 17-year-old has broken all three Irish junior breaststroke records in the past three days.
Darragh Greene was the best of the Irish in the 100m breaststroke, touching in 59.11, while Liam Doyle finished his meet with a personal best of 1:01.12.
In the 200m individual medley, both Brendan Hyland (1:58.12) and Cillian Melly (2:01.14) swam lifetime bests, while Jack McMillan touched in 2:01.40.
James Brown, swimming for Loughborough University, set a new Irish record (1:56.91) in that event just last night at the Swim England Short Course Championships.