Britain's Richard Kilty claimed a stunning victory in the 60 metres at the World Indoor Championships.
Minutes after Tiffany Porter had taken bronze in the 60m hurdles, Kilty produced the greatest performance of his career to snatch gold at the Ergo Arena in Sopot.
The 24-year-old from Stockton stormed to a personal best of 6.49 seconds, edging out Marvin Bracy of the United States by 0.02secs, with Femi Ogunode of Qatar taking bronze.
Dwain Chambers, who was seeking a fourth straight medal in the event, could only finish sixth in 6.53 as the eight finalists were separated by just 0.09s.
In the hurdles, Porter, who won silver two years ago, was hampered by a slow start but produced a strong finish to record a season's best of 7.86 seconds, just 0.01 secs behind Olympic champion Sally Pearson. Nia Ali of the United States took gold in a personal best time of 7.80s.
Luke Cutts had been tipped to win a first ever global medal by a British male athlete in the pole vault after setting a new national record of 5.83m earlier this year, but he could only finish eighth in the final.
Cutts needed three attempts to clear his first height of 5.40m and eventually bowed out of the competition after three failures at 5.75m.