Australia has a baby Dolphin in its Olympic camp: Emily Seebohm, 15, has just blasted a 59.59 Commonwealth record in the 100m backstroke to book her ticket to Beijing alongside Sophie Edington, on 59.84, leaving Belinda Hocking, on 59.97 wishing she had been born beyond the borders of a swimming superpower.

Seebohm turned in 28.79 and came home in 30.80, to 29.06 and 30.78 for Edington and 29.44 and 30.53 for Hocking, that last effort indicating that a berth in the 200m is in the offing for Hocking. On a 1:00.89, Tayliah Zimmer, Commonwealth champion, was left in a bygone world. The race was the first domestic tussle in the world to produce three sub-minute efforts and took to eight the number of women who have now cracked the minute.

The sub-minute club now looks like this:

59.21 Coughlin (USA)
59.41 Zueva (RUS)
59.42 Coventry (ZIM)
59.50 Manaudou (FRA)
59.59 Seebohm (AUS)
59.81 McGregory (USA)
59.84 Edington (AUS)
59.97 Hocking (AUS)

And for medley swimmers, take note of the semi-finals in that event: Stephanie Rice clocked 1:01.10.

The men's final of the same event witnessed the end of the line for Olympic medallist Matt Welsh, now 31. The Olympic berths went to 21-year-old Ashley Delaney, in 53.68, an Australian record 0.22sec shy of the Commonwealth standard held by Liam Tancock (GBR), and Hayden Stoeckel, in 53.86. Welsh was still sharp, on 54.21, but not sharp enough this time round.

Stoekel turned first in 26.14 before returning in 27.72, compared to Delaney's splits of 26.26 and 27.42.

Here's how that event is stacking up:

52.98 Peirsol (USA)
(53.01 Phelps USA)?
53.46 Meeuw (GER)
53.46 Tancock (GBR)
53.50 Lochte (USA)
53.50 Vyatchanin (RUS)
53.54 Bal (USA)
(53.60 Krayzelburg, USA)
53.68 Delaney (AUS)
(53.78 Welsh, AUS)
53.78 Rogan (AUT)
53.81 Cromwell (USA) 53.82
53.85 Morita (JPN)
53.86 Stoeckel (AUS)