Rebecca Adlington got the first medal for England at the Commonwealth Games as she bagged a bronze in the 200m freestyle.
The Olympic champion is set to race in the 400 and 800m later on in the tournament and was experimenting with the 200m in Delhi.
And the experiment pulled off as she was piped to bronze as Wales' Jazz Carlin finished like a train to get the silver.
Australia's Kylie Palmer took gold, the Delhi Games look set to be a strong meet for the Aussies, as she clocked a time of 1:57.50 seconds for gold.
Speaking to BBC Sport after the race Addlington said: "It's definitely a tough week but now's the time to try it, try to cope with it and see how you do.
"If I don't cope with it and tire towards the end of the week, I have the chance to say it didn't work for me. Better to try it now than at the Worlds or Olympics."
The first morning in the pool was successful for the home nations as Scotland's David Carry took a bronze in the 400m freestyle, the gold was won by Ryan Cochrane of Canada.
Michael Rock won a silver in the 200m butterfly and this was backed up by a silver from the men's 4x100m freestyle relay.
Liam Tancock qualified for the 50m backstroke while Fran Halsall also came through her semi-final to reach the 50m butterfly final.
FemaleFirst Helen Earnshaw