Two supplementary entries have been received for the Coral-Eclipse to leave a potential field of 11 at Sandown on Saturday.
Godolphin announced on Monday morning that Royal Ascot winner Hawkbill was to be added to the field, while Roger Charlton also put in Countermeasure.
His presence is to ensure a strong pace for his stablemate Time Test, one-time ante-post favourite for the race and set to run as long as conditions are suitable.
Aidan O'Brien is strongly represented. Dante Stakes runner-up Deauville skipped the Irish Derby in favour of this, but the Ballydoyle trainer has stated he would not be at home on soft ground.
French 2000 Guineas winner The Gurkha, viewed by some as an unlucky loser in the St James's Palace Stakes, could step up in trip to 10 furlongs for the first time and has emerged as O'Brien's number one contender, taking over at the head of the markets.
Cougar Mountain, Bravery and Long Island Sound are the other Ballydoyle possibles.
My Dream Boat, gutsy winner of the Prince of Wales's Stakes for Clive Cox, will bid to add another Group One to his haul and will certainly be at home with cut in the ground.
Charlie Appleby's Hawkbill will head to the Esher venue on the crest of a wave having won each of his last five starts.
The most recent of those wins came in the Tercentenary Stakes - won last year by Time Test - and connections feel he is ready to step up to the highest level.
John Ferguson, Godolphin's chief executive and racing manager, said: "Charlie is very happy with how Hawkbill has been training since Ascot.
"He is taking a step up, but we feel he deserves to take his chance."
Godolphin last won the Eclipse in 2004 with Refuse To Bend.
Completing the list is John Gosden's Sandown regular Western Hymn.
While the ground is drying out, clerk of the course Andrew Cooper is expecting a wet spell midweek.
"We escaped a bit at the weekend as we were at the risk of some sharp showers, but we missed those and only had about 1mm," said Cooper.
"It's a brighter day today with a breeze and I'd say there's more good to soft than soft, but the sprint course is slower and would still be soft.
"It's due to be unsettled midweek, we're due to stay dry until mid-Tuesday afternoon and then for the next 48 hours we are forecast at least two, possibly three, bands of rain where we could get between 10-20mm.
"It is then due to dry up Friday into Saturday but by then we could be back to predominantly soft ground.
"We've changed the rail on the bottom bend due to the storm last week, unfortunately it was where we had planned to run the Eclipse but it's no great issue.
"Having to realign has meant we've got a narrow seven-furlong start, though, and instead of a 16-runner maximum we've dropped it to 12 to allow us to save a fresh strip for the Eclipse."