London: Wimbledon champion Andy Murray will be among the top seeds at this year's tournament despite having slipped down the ATP world ranking to eighth, organisers announced on Tuesday.

"We have a surfaced-based seeding system here at Wimbledon," All England Lawn Tennis Club (AELTC) chairman Philip Brook told a press conference at the tournament venue in south London. "So we take the ranking points of each player, and add to that the ranking points they hypothetically received last year on grass, and we add to that 75 percent of the best-performing tournament in the previous year. "So to put it into context for Andy Murray, as winner of Queen's last year and winner here last year, and a finalist here in 2012, there will be a significant impact on him. "There will also be quite a significant impact on (Roger) Federer and (Novak) Djokovic. There will be some adjustment."