Christine McMahon proved the star of the large Irish contingent competing at the AtletiCAGenève meet in Switzerland when she ran a lifetime best of 56.42secs in the 4000m hurdles.
Her time was enough for second place in the B race and was an A qualifying mark for the Europeans. McMahon had already run two European Championships B qualifying marks of under of 57.90 secs. She ran her previous best of 56.96 secs in 2014.
Ireland sent full squads for the men and women's 4 x 100m relays, with both teams aiming to nail down their places for the European Championships.
In the men's 'B' race, the quartet of Jason Smyth, Eanna Madden, Marcus Lawler and Craig Lynch finished second in 39.98 secs and didn't quite do enough. Finland won the race in 39.55 secs. The Irish men are now 17th on the ranking list with the top 16 making it to Amsterdam.
The Irish women moved up to 14th in the rankings after finishing a fighting second behind the French U20 squad.
Joan Healy, Phil Healy, Sarah Murray and Niamh Whelan were clocked at 44.67 secs. The French four ran 44.58 secs.
Individually, Jason Smyth clocked a time of 10.56 secs in the 100m.
In the women's 100m, Sarah McCarthy of Mid-Sutton ran 11.89 secs. Over 400m, Craig Lynch of Shercock proved the fastest with a time of 47.31 secs, with Timmy Crowe of Clonliffe clocking 47.46 in the same race.
Brian Gregan ran a time of 47.70 secs and David Gillick 48.37 secs in earlier races.