Great Britain's Darren Mew sliced 0.05secs off his personal best to qualify for tomorrow's 100m breaststroke final, finishing third in his semi in 1:00.40.
The University of Bath swimmer was just 0.14secs off Nick Gillingham's nine-year-old British record.
But Russia's Roman Sloudnov looks a good bet for the gold as he broke his own world record and went under the one-minute barrier for the second time in 59.94.