Tennis great Serena Williams announces retirement plans

(NewsNation) — Tennis great Serena Williams announced she plans to retire, saying in an essay that the"countdown" to her moving away from her tennis career has started.In a Vogue magazine essay published Tuesday, the seven-time Wimbledon winner said she is "evolving" away from tennis toward "other things that are important to me.""I have never liked the word retirement. It doesn’t feel like a modern word to me," Williams said. "I’ve been thinking of this as a transiti