The Watch and Bet at Mansionbet Bud Booth Mares Chase is the centrepiece of the first of two November meetings at the Lincolnshire track, and is run over around three miles.
Really Super, trained at Newmarket by Amy Murphy, caused a 25-1 surprise when winning the big race in July.
She has since been pulled up in her only jump race since but has won on the flat.
Meanwhile Casablanca Mix, who impressed in taking the big race 15 months ago has a possible trip back to Market Rasen after Champion Trainer Nicky Henderson confirmed her entry.
She finished second at Chepstow last month on her first run in 10 months.
Other possible include Bit on the Side, who won a Mares Hurdle race at the track in July, while trainer Henry Daly, who saddled Atlanta Ablaze to win this race a year ago may be represented again with Chilli Filli.
There is a seven race card set for Thursday with a first race time of 12.30pm.
The action remains behind closed doors but will all be live on Racing TV.
Nadia Powell, General Manager at Market Rasen said: “This is an important day for us with a Listed feature and I am very grateful to Mansionbet who are supporting the entire card.
“We always take a special interest in how our big race winners progress and the thought we might see the last two Summer Plate heroines in opposition is exciting.
“I am pleased with the entries for Thursday and the entries for the opening Maiden Hurdle look especially eyecatching with a number of top yards represented.”