Serena Williams said her decision to end a 14-year boycott of the BNP Paribas Open after suffering racist abuse in the 2001 final came down to "timing."
Williams had skipped the showpiece event at the tournament, which takes place annually at the Indian Wells Tennis Garden in Southern California, because of the behaviour of some spectators who booed and heckled the American and her family.
The reaction was in apparent response to Serena's sister Venus having withdrawn from their semi-final that year just minutes before the match.
"The whole point of me coming back was not to necessarily focus on what happened 14 years ago," world number one Williams, 33, told a packed news conference at the Indian Wells Tennis Garden.
"It was more or less to focus on how I felt, if it was the right opportunity for me to come back now and for me to be at this tournament. I just felt like it was time."
"There's not one thing that says I should come back, that I should come back in 2015. I just felt like it was the right time for me to come back here and try to do the best that I could."
Spectators vented their displeasure at the withdrawal of Venus during the 2001 final, booing Serena and jeering her sister and father Richard Williams when the pair arrived to watch the match.
Richard Williams alleged he had heard racist taunts, and Serena said she was "nervous" when speaking to her father about her possible return.
"He's been through some things when he was growing up," said the 19-times grand slam singles champion. "It was a really emotional time for me when I was talking to him.
"I was like, 'I think I should go back, but I'm not going to go back if you don't want me to.' He said it would be a big mistake if I didn't go back. I thought that was really admirable."
Serena Williams plays her opening match at Indian Wells on 13 March.