Trainer John Gosden registered his maiden winner for Godolphin in the first racing at Chelmsford City.
Gosden's Tempus Temporis, an 11-4 shot, won the Golden Mile Conditions Stakes by five lengths from Super Kid.
As a result, Tempus Temporis qualifies for the All-Weather Championship at Lingfield Park on 3 April.
The Essex circuit, formerly known as Great Leighs, closed in January 2009 but has reopened under a new name and has 58 meetings scheduled this year.
Sunday's seven-race card was a 'test day' and only members of the public with pre-booked tickets were admitted.
The crowd was estimated at 750, including invited guests and connections of runners.
Philip Siers, racecourse managing director, said: "We only bought it in December of 2013. We've collapsed a two-year construction project into one year.
"The weather hasn't helped us and we've a couple of small things to do which will be completed by the end of January and we've limited the crowd on that basis.
"This is the first of possibly three trial fixtures - we certainly want one more. The official opening will be on 1 February, when we'll be open to the public."
|BBC racing correspondent Cornelius Lysaght|
|"Feedback to Chelmsford City's 'test day' will have been generally positive, though viewing from the new stand, positioned in the centre of the track, looks an issue.|
|"The biggest thing is how the course, with its stated ambitions to grow from the current 58 meetings, can be accommodated in a crowded fixture list."|