"My hamstring started to get really tight and I saw the physio at the end of the set and she taped it up," Swan told BBC Sport."It was pretty tight when I was pushing up on my serve, which affects me a little bit." She added she had learnt a lot from her experience in Miami."I'm really glad that I got the chance to play this week because it made me realise I do have the level to compete with the top players," she said.