Richard Quinn will miss the Lingfield Derby Trial meeting and the first day of York's Dante meeting after picking up a three-day suspension at Redcar on Thursday.
He was banned for misuse of the whip on Still In Love in the second division of the Manny Bernstein Bookmakers Trade Division Maiden Stakes.
Still In Love was beaten a neck by Noblenor and the stewards decided that Quinn had used his whip with excessive force. He will be sidelined on May 13, 15 and 16.
The feature race on the first day of the York meeting is the Musidora Stakes in which Quinn's boss Henry Cecil may well have a runner.
Quinn had a happier time of it earlier in the afternoon when he rode Mybotye to a convincing success in the seller.
Mybotye was giving trainer Tony Mulholland his first success since he last year moved into the stables at Thirsk formerly occupied by Sue Bramall.
Mulholland retained the gelding without a bid and explained: 'Our horses were not 100% right last year, but they are just coming right now. We have also had a second at Wolverhampton and I have had an each-way double!'
Mick Easterby played a strong hand with five runners in the Manny Bernstein Bookmakers Credit Division Fillies' Handicap and managed to come out with the top prize as Card Games got the better of Whizz Kid by a neck.
Card Games was partnered by Gyles Parkin, and Easterby's assistant Robin O'Ryan said: 'You just can't find races for fillies, we could have run two or three more!
'This is our first winner for her owner Guy Reed.'
Mystify may not have had a lot to beat in the second division of the seven furlongs maiden, but the manner of her 13-length success in the hands of Kevin Darley suggests she may be a cut above average.
Promised impressed on her racecourse debut in the second division of the Manny Bernstein Bookmakers Maiden Auction Stakes and trainer Jeremy Glover is expecting her to go on to much better things.
She quickened in good style from half way under apprentice Dean Mernagh to lead over a furlong out and before holding on to beat Wilson Blyth by three-and-half lengths.
Glover has run only one other two-year-old, another filly named Dreams Desire who won at Doncaster on Monday, and he said: 'One of the two will go for the Hilary Needler at Beverley and then hopefully we would go for the Queen Mary (at Royal Ascot).
'Dean thinks Promised is the better of the two, but Dreams Desire will improve so much because she is so laid back. We have half a dozen two-year-olds in all, including a couple of other fillies which will go along with the two which have won.'
Former jockey Willie Carson will have been doubly-delighted to hear that Muja Farewell had made a successful debut in the first division of that juvenile event.
Willie Supple sent the David Barron-trained filly on over a furlong out, and she stayed on well to beat Shiner rather more comfortably than the three-quarters-of-a-length margin might suggest.
Barron explained: 'She was bred by Willie Carson and he still owns a leg in her. The win is not at all a surprise, in fact it would have been a surprise if she had been beaten.'
This was the second of the four juveniles Barron has run to have won, and he added: 'We have got 25 two-year-olds in and we might just have one or two which are all right.'
