Suppose Serena Williams is a professional tennis player who has won 23 Grand Slam singles titles, the most by any player in the Open Era. She has also won 14 Grand Slam doubles titles with her sister Venus Williams. Serena has been ranked world No. 1 by the Women's Tennis Association on multiple occasions.
Can we infer that "Serena Williams has never been ranked world No. 1 in women's tennis"? Yes, no, or maybe?