Sunderland will be without a key player for the upcoming Championship games vs Southampton and QPR. Sunderland now find themselves 10 points outside the play-off places after suffering a fifth-straight defeat in the Championship on Tuesday night. Mike Dodds watched on as his side lost 1-0 vs Leicester City at the Stadium of Light; Dodds has now lost three games out of three as interim boss. Up next is another tricky outing against top-six opposition, as the Black Cats make the long-haul journey down to Southampton this weekend. But one player who won’t be available for that game is Luke O’Nien…