LONDON: Liverpool defender Martin Skrtel will be out for six weeks after suffering a hamstring and tendon injury, the Slovakian said on Tuesday. The centre back limped off in the first half of Liverpool’s 3-0 defeat to Watford on Sunday and his absence is likely to cause further headaches for manager Juergen Klopp and his struggling side. The 31-year-old has been pivotal for Liverpool this season, appearing in all their Premier League games. His injury has come at a bad time for Klopp’s side. They are in ninth place in the Premier League after taking one point from their last three league games and are already without centre back Dejan Lovren through injury.