Top seed Roger Federer may have to overcome his predecessor as Wimbledon champion, Lleyton Hewitt, in the quarter-finals if he is to retain the men's title at the championships this year.
The winners of the last two years were drawn in the same quarter today for the tournament which gets underway next week.
Seventh seed Hewitt, sensationally knocked out in the first round last year, was handed a further hurdle in the shape of Goran Ivanisevic.
The 2001 champion, making his first visit to the All England Club since his victory three years ago, was also placed in the top quarter.
Fifth seed Tim Henman was offered an easier passage in the bottom half after he was drawn in the same quarter as 2002 runner-up and fourth seed David Nalbandian.
In the women's event, defending champion and top seed Serena Williams will probably have to overcome her conqueror at Roland Garros, Jennifer Capriati, in the last eight again after the two were placed in the top half.
A Williams sisters final may also be on the cards for a third year running after sister Venus, champion in 2000 and 2001, found herself in the bottom half.
In a repeat of the French Open final, Russian compatriots Anastasia Myskina, seeded second, and Elena Dementieva, six, were drawn in the same half and could meet in the quarters.