ICC Women's World Twenty20, Taunton
Group A: West Indies 123-7 beat South Africa 120 all out by three runs
Group B: England 113-0 beat India 112-8 by 10 wickets
Edwards scored 61 to help ease England to victory over India
England Women started their inaugural World Twenty20 campaign with a thoroughly convincing 10-wicket win over India at Taunton.
India chose to bat but were restricted to 112-8 as left-arm spinner Holly Colvin impressed in taking 3-20.
England are current 50-over world champions and had little difficulty reaching the target.
Openers Charlotte Edwards and Sarah Taylor chased down the total with 26 balls to spare in the Group B match.
Edwards scored 61 from 53 balls and hit six fours and two sixes in the process, while Taylor notched 50 from 41 balls.
"This is our biggest game and, hopefully, the win will clinch our semi-final spot," said Edwards.
It was a wonderful start but my nerves are still jangling
West Indies captain Merissa Aguilleira
"Everyone wanted to see how we would react to the tag of favourites. Whenever there is a bit of pressure on this team the players come out fighting.
"I was really, really pleased with Holly - she bowled so well.
"To come out and play as we have done in front of such an enthusiastic crowd has been fantastic."
Earlier, in the opening match of the tournament, West Indies recorded a surprise four-run win against South Africa in Group A.
Stefanie Taylor starred for West Indies as she hit a 52-ball 50 in a total of 123-7.
South Africa slumped to 82 for six in reply and, while they rallied on the back of 38 from Mignon du Preez, their fate was sealed in a tense final over when Stacy-Ann King ran out Shabnin Ismail with a direct hit.
"It was a wonderful start but my nerves are still jangling," said West Indies captain Merissa Aguilleira.
The tournament comprises two groups of four with the top two qualifying for the semi-final stage.
All the group games are being played at Taunton, with one semi-final at The Oval and the other at Trent Bridge. The final takes place at Lord's on 21 June.