Dwayne Dunn has decided against appealing a careless riding suspension and will need to have a good day at Flemington on Saturday to keep his premiership hopes alive.

Dunn rode a winning treble at Moonee Valley on Wednesday to move back to an one-win lead over Craig Williams and three ahead of Damien Oliver in the Melbourne jockeys' premiership.

But Dunn was hit with an 11-meeting suspension for careless riding in the first of his three wins.

Dunn has decided against appealing the severity of the ban, so Saturday's Flemington meeting will be his final chance to add to his season tally.

He will miss the last three metropolitan meetings.

Dunn would need to have had four meetings shaved off on appeal to get back for the final metropolitan meeting of the season at Ballarat, or five meetings to ride in the final two city fixtures.

"I would have needed it (the suspension) to be cut in half basically," Dunn said.

Dunn has not won a Melbourne premiership before and hopes to at least build on his season tally of 55 city wins when he rides at Flemington.

"I'll see what I can produce on Saturday and hopefully I can pull something out of the bag and make it competitive for them to chase down in the last few meetings," Dunn said.

Dunn's eight Flemington rides include early favourites in Il Cavallo and Herstory and three other runners that are at single-figure odds.

He said there were no stars among his book of rides.

"I'm going into the meeting with competitive rides but no sit-and-steer jobs anyway," he said.

"There's big fields and we (Dunn, Oliver and Williams) have all got pretty solid rides throughout the day. If I could get something out of the day it would be a great bonus."