LONDON (AFP) - Liverpool manager Jurgen Klopp missed his team's 2-2 draw with Sunderland in the Premier League on Saturday after having to have his appendix removed, a club spokesman said.

The 48-year-old German began feeling discomfort on Friday evening at the team's Liverpool city centre hotel and Andy Massey, the team's head of medical services, diagnosed him with appendicitis.

He was successfully operated on at Aintree University Hospital in Liverpool at around lunchtime on Saturday and was informed of his team's result afterwards.

Coaches Zeljko Buvac, Peter Krawietz, Pepijn Lijnders and John Achterberg took charge of the team at Anfield, with development coach Lijnders fulfilling post-match media duties.

Klopp is expected to make a quick and full recovery, although it remains unclear as to whether he will be able to sit on the bench for Tuesday's FA Cup replay against West Ham United at Upton Park.

Liverpool went 2-0 up through Roberto Firmino and Adam Lallana, only for Sunderland to hit back in the last eight minutes courtesy of goals by Adam Johnson and Jermain Defoe.