Danish Open, day 2 finals: 

Joint world champion Jeannette Ottesen came under pressure in the 100m freestyle final, a 53.90 season best required to hold off 17-year-old Pernille Blume, on 54.06, Mie Nielson, 15, setting a Danish junior record of 55.10 for third.

Ottesen, Svømmeklubben Kvik, Kastrup, was out ahead on 25.50 at the turn, Blume, Birkerød Svømmeklub, on 26.09, Nielsen, Aalborg Svømmeklub, on 26.32. The teenager's put Ottesen under pressure on the way home but the world champion of 2011 did what it took to get her hand to the wall, first.

Her season best had been a 54.14 at the Olympic test event in London earlier this month. Blume's best had been a 54.63 leading off the Danish 4x100m relay in Shanmghai last year, while Nielsen set a junior mark of 55.47 in semis yesterday.

How the 2012 Olympic season in shaping up (two per nation):

• 53.05 Sarah Sjostrom (SWE) 
• 53.30 Ranomi Kromowidjojo (NED)
• 53.57 Francesca Halsall (GBR)
• 53.74 Melanie Schlanger (AUS)
• 53.84 Cate Campbell (AUS)
• 53.90 Jeanette Ottesen (DEN) 

Sjostrom's effort, the fastest ever in a textile suit, was clocked in Eindhoven in December 2011.

Lotte Friis, world 1500m champion and 800m silver medallist behind Britain's Olympic champion Rebecca Adlington in Shanghai last year, took the 800m in 8:28.52, just ahead of Grainne Murphy (IRL), on 8:29.55. The Irish visitor sat on the Dane's shoulder throughout the race but Friis, of Herlev Svømning, was not to be past, the two turning in 4:13.80 and 4:14.44 respectively at the 400m mark. 

Russian visitor Andrey Grechin took the men's 100m free in 50.08 ahead of Jakob Andkjær, Vallensbæk, 50.35, and Aurelien Kunzi (SUI), 50.86, with Emil Skovfoged Gregersen, Aalborg, locked out in 50.89.

More on events at the Danish Open later.