'I am extremely disappointed to miss the Masters this week,' said Westwood. 'And although I have delayed making a decision for as long as possible I wanted to make sure I withdrew before the draw was made. However all being well I very much hope to be back in Augusta next year with my family.'
Westwood's withdrawal reduces the Masters field to 93 players.
Westwood has made four starts at Augusta National with his best finish coming in 1999 when he tied for 6th. His first two appearances resulted in 24th and 44th place finishes in 1997 and 1998 respectively. Last year he shot rounds of 77 and 75 and missed the cut.
The 2000 European Order of Merit champion has broken par in only 5 of his 14 tournament rounds at the Masters.
Full Coverage of the 2001 Masters Tournament