Joanna Mason

This season has been her busiest and most productive yet. Sixty-four winners from 619 rides — roughly 1 in every 10 — might not sound outrageous, but context matters. Riding nearly 620 times in a year means trainers trust her with their horses regularly, and turning that volume of rides into 64 winners requires both skill and consistency. There are plenty of jockeys who ride far less and win far less.

Her most established working relationship is with the yard run by Michael and David Easterby, where she has ridden 21 winners from 233 races together — winning 9 in every 100 rides for that team. It's a partnership built on familiarity and trust, the kind that develops when a trainer keeps putting you on horses because you keep doing the job properly.

Two details stand out as particularly telling. At Newmarket — one of the most prestigious and technically demanding tracks in the country, a long, wide, unforgiving straight that exposes every weakness in horse and rider — Mason has won 3 times from just 10 rides. That's 30%, or roughly 1 in every 3, which is a remarkable conversion rate at a track where many jockeys struggle to make their mark. And on wet or slightly soft ground, she wins 9 times from every 56 races at that condition, a 16% rate that is noticeably sharper than her overall average. Some jockeys thrive in the mud; Mason appears to be one of them.

Four years in, over 230 career winners, a Newmarket record that any jockey would be quietly pleased with, and a win rate on soft ground that suggests she genuinely enjoys the conditions others dread. The trajectory here is hard to argue with.