Martin's success with handicappers has seen the bookmakers take a cautious approach in the build-up to the race, in which the stable's Pires is also an intended runner.
William Hill's Kate Miller said: "Usually these gambles are inspired by tipping lines but this doesn't appear to be the case this time. The money has come from a wide spread of punters and from several that we respect."
Martin is not surprised by the support for Salute Him, who has 9st 5lb in the £160,000 contest.
He added: "We've yet to confirm a jockey, but I think the public are just looking for a form horse and are latching onto his last run — and if he improves from that, we'd be hopeful."
Meanwhile, Brian Meehan hopes Radiohead, beaten by Awzaan when favourite for the Group 2 Mill Reef Stakes at Newbury last time, can avenge that defeat in Friday's Group 1 Middle Park Stakes at Newmarket.
Meehan said: "The pace of the race didn't suit him at Newbury and hopefully he'll be seen in a better light this time. He's very well and we'll just have to see what happens."
