Jason Maguire goes before the British Horseracing Authority's disciplinary panel today, facing a lengthy whip ban – which would virtually hand a 19th successive champion jockey title to Tony McCoy.
Maguire is the Ulsterman's only realistic challenger for the crown.
McCoy missed the start of the current season in April due to rib injuries, enabling Maguire to get 16 winners on the board before the Moneyglass rider's return.
But the 39-year-old has been in prolific form since getting back in the saddle in May, charging past Maguire and building up a 20-winner lead.
McCoy hit the half century of winners on Sunday and added to his tally with a double yesterday at Worcester on board Rosie Probert and Another Hero.
Maguire was referred by the Cartmel stewards on Monday after after being found guilty of misusing his whip aboard runner-up Atlanta Falcon in the Champagne Louis Roederer Handicap Chase.
The matter was referred to the BHA as it was Maguire's fifth such offence of mis-use in the last six months.
Aidan Coleman has been banned for 10 days by the Worcester stewards for his ride on Ailunthus in the Get Live Sports Scores Novices Hurdle.
The jockey was found guilty of failing to take all reasonable and permissible measures to obtain the best possible placing on the Richard Woollacott-trained four-year-old.
Ailunthus, a 20-1 chance, was beaten 37 and a half lengths into seventh place behind the winner Rosie Probert, ridden by McCoy
Coleman is suspended on August 13, 15 and 17-24.
Meanwhile Ger Lyons acknowledges the tough Ballydoyle challenge facing his smart juvenile Exogenesis in tonight's Korean Racing Authority Tyros Stakes at Leopardstown.
Green on his early-season debut at the Dublin course, Lyons' Dark Angel gelding reappeared to land a maiden at Fairyhouse in June before returning to Leopardstown earlier this month to claim a conditions event. However, Exogenesis must take on two useful Aidan O'Brien runners led by Sir John Hawkins, who was third at Royal Ascot and not beaten far when fourth in the July Stakes.
Michael Hussey is given a big chance on stablemate Expedition, winner of his only start at Limerick in May.
"It's a huge step up in class from a winners' race to a Group Three, especially as we are bypassing Listed level, but he's a course-and-distance winner and he's a nice horse," said Lyons.
"Whether he's up to this remains to be seen as it all depends on what Ballydoyle throw at you.
"Aidan's horses improve hugely from one race to the next and he sets the standard over here. I've been second to him before, I'll be second to him again, and there's no disgrace in that."
Jim Bolger, whose nine previous winners of the event include Teofilo and New Approach, saddles Home School, who was fifth in last weekend's Anglesey Stakes.
O'Brien appears to hold the key to the other Group Three, the Jockey Club Of Turkey Meld Stakes, with Mars taking a considerable drop down in class.
The three-year-old will tackle six runners including Dermot Weld's consistent mare Along Came Casey.
* ARMAGH trainer Jim Lambe's great run of form continued at Naas last night when 33-1 shot She's Not Simple won the Network Ireland Maiden.