Olympic 200m breaststroke silver medallist Michael Jamieson had to rely on a swim-off to make it through to the 100 metres final on the second day of action at the British Gas International in Leeds.

The 25-year-old  produced the fastest opening length of any in heats but eased off and found himself level 8th with Russell Smith on 1:02.24. In the swim-off, Jamieson made sure with a 1:01.50. He had miscalculated.

Jamieson told reporters: "I just took my foot off the gas a bit too much, it was a bit of an error in judgement. In the past couple of years I have been focused on the 100m as much as the 200 because I need the front end speed. I felt all right, it was just a bit of a mistake, easing off too much."

Jamieson has just spent three weeks at an altitude training camp in Sierra Nevada, Spain,with his Bath Intensive Training Centre teammates, arriving back in Britain at 11pm Tuesday.