Prague - World number 10 Tomas Berdych said on Thursday that his 2016 season was over because of recurrent appendicitis, giving up his post of first alternate at next week's ATP Tour Finals.
"After discussion with doctors in Prague Hospital I was recommended to have a break for two weeks and then we will see what they gonna do with my appendix," Berdych tweeted.
"See you next year," added the Czech player.
The 30-year-old Berdych was hospitalised with appendicitis in Cincinnati in August and had to skip the US Open because of the illness which he cured with antibiotics.
Czech media said he might undergo surgery and quoted him as saying he would like that to happen as soon as possible so that he could start training for next season.
The ATP Tour Finals start in London on Sunday with Novak Djokovic facing Dominic Thiem in the opening rubber.