England opener Marcus Trescothick is the bookmakers' favourite to become Australian bowler Glenn McGrath's 500th wicket when the first Ashes test begins at Lord's on Thursday.
McGrath is sitting on 499 test wickets and will become the second pace bowler to achieve the milestone should he take a wicket in the match.
West Indies bowler Courtney Walsh retired with 519 test wickets. British bookmakers William Hill have offered the left-handed Trescothick at 9-4 to become McGrath's 500th victim with fellow opener Andrew Strauss 11-4.