Switzerland will return to the elite Davis Cup World Group next year after Stanislas Wawrinka sealed a 3-2 victory over Australia yesterday by wrapping up a five-set defeat of Lleyton Hewitt. Wawrinka won the match 4-6, 6-4, 6-7 (9-7), 6-4, 6-3, putting the visitors in the 16-team World Group in 2012. The pair had started play on Saturday but the match referee decided it was too dark, and the match was continued yesterday.