Serena Williams’ tennis comeback, as seen from the grass courts of Queen’s in London‎

Queen’s Club, LONDON — Nearly four years after playing what appeared to be the final match of her career, Serena Williams is back on a professional tennis court. Williams, 44, stepped onto the grass at Queen’s in west London last week and over the weekend, before a wild card appearance in the women’s doubles alongside 19-year-old Canadian Victoria Mboko. Her return follows months of waiting, after she re-entered tennis’ anti-doping testing program late last year and became eligible to compete in