Rick Macci speaking to Sportskeeda formerly coached Serena Williams and likened it to a catfight as opposed to a rivalry and hinted that there was more than a professional element to the rivalry.
"She’s not welcome at the facilities": Venus Williams jokes about banning Serena Williams from her home
"Maria Sharapova, you know, talk about her rivalry with Serena, and yea you're right. A rivalry should be a back and forth thing, and I know it was 20-2 with Serena leading the way," Macci said during an interview with Sportskeeda.
"I think Maria, when she came to me at 11, her and Yuri, they had their sights on Venus and Serena, and they talked about it, we talked about it a lot, that was always her goal. But listen, at the end of the day it was a rivalry simply because maybe it was more like a catfight. Who knows, maybe they didn't like each other for other reasons," he added.