The filly, who earlier in the season contested a Listed event at York, faces nine rivals in the class 4 Max Recycle Handicap over five furlongs at the East Lothian venue.
Duffield said: “We took her out at Thirsk on Monday evening as the ground had gone soft. She ran a lot better at Ripon last time and she wants quick ground like it seems to be at Musselburgh. She’s also got a good draw in stall nine, so, hopefully, she’ll run well.”
Among the opposition to Rosina is course-and-distance scorer Bunce trained by Linda Perratt, pictured. The East Kilbride raider bounced back to form when scrambling home by a nose at Ayr earlier in the month.
Another recent winner in the line-up is Tim Easterby’s Mappin Time who struck at Beverley a fortnight ago.
The opening Dam Good British Stallions Studs EBF Maiden Stakes sees Mark Johnston double-handed with Election Day and Nepeta. Joe Fanning gets the leg up on US-bred filly Nepeta, who is likely to improve for tackling this quicker ground.
The World Horse Welfare Handicap features a return to Musselburgh for five-time course winner Rasaman. Jim Goldie’s 12-year-old will be making the 121st start of his career.
Meanwhile, Catterick punters should adopt a philosophical view on the racing by lending their support to Nietzsche, writes Glendale. The three-year-old son of Poet’s Voice has been well tried this season, but now looks as good a time as ever to get back involved.
Brian Ellison’s inmate has posted some fine efforts during the course of the year, the most noteworthy of which came in April, when he won back-to-back races at Nottingham and at Beverley.
He was also deemed sharp enough to go to Royal Ascot, where he did not do too badly at all in finishing seventh in the King George V Stakes.
Next up was a visit to Ayr, where he was sent on his way a well-backed 3-1 favourite in a tight mile-and-a-quarter handicap.
Nietzsche was a little too keen for his own good in Scotland, but he made significant late gains to finish fourth behind Robinnielly – beaten under two lengths.
To that end, the return to a mile and a half for the Betfred Goals Galore Extra Handicap looks a shrewd piece of business.
His cause will probably be aided by a little more rain but, in any event, he should still be smart enough to win a race like this.