 Nalbandian has been struggling with an ankle problem since the Davis Cup |
World number eight David Nalbandian and former Wimbledon champion Goran Ivanisevic have both pulled out of the Pacific Life Open with injuries. Nalbandian has failed to recover from an ankle injury sustained in the Davis Cup in time for the first Masters Series event of the season.
Ivanisevic withdrew with a back injury and will be replaced by Antony Dupuis.
Switzerland's world number one Roger Federer is the top seed with men's play due to begin on Friday.
The 32 seeds, including Britain's Tim Henman, all have byes into the second round.
Henman has what looks like a favourable draw, being in the same section as sixth seed Rainer Schuettler.
The draw has set up a potential third round clash between Andy Roddick and Marat Safin, who beat the American at this year's Australian Open.
The women's tournament, which begins on Wednesday, has been hit by several withdrawals including world number six Jennifer Capriati. 
MMIX
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