LONDON — After nearly four years away from professional tennis, Serena Williams showed she still has plenty of power to her game as she made a winning return at Queen’s Club on Tuesday. The 44-year-old Williams hit service winners of up to 120 mph and some ferocious winners as she teamed up with 19-year-old Canadian Victoria Mboko to win their opening doubles match at the Queen’s Club grass-court tournament. kAm(:==:2>D 2?5 |3@<@ 362E E9:C5\D66565 5F@ }:4@=6 |6=:492C\|2CE:?6K 2?5 tC:?