Suppose Serena Williams (born September 26, 1981) is an American professional tennis player who has been ranked world No. 1 in singles on eight separate occasions. She holds the most Grand Slam titles in singles, doubles, and mixed doubles combined among active players. Her 23 Grand Slam singles titles are the most by any player in the Open Era, and the second-most of all time.
Can we infer that "Serena Williams is a retired tennis player."? Yes, no, or maybe?