Everyone is talking about the size of the course and, with just a single run-out bagging 20 penalty points, expect some changes to the leaderboard.
"It's very big, but it's fair,'' said Nicholson.
The 51-year-old is chasing the $US350,000 Rolex Grand Slam for the rider who wins Burghley, Badminton and Kentucky in succession. With Burghley already in the bag, Nicholson needs victory at Kentucky followed by Badminton next weekend.
"I'm not here just to make the numbers,'' he said. ``I'm here purely to try and win and snowball the thing along for Badminton.''
The Kentucky event is the Western Hemisphere's only four-star three-day event. It is part of the HSBC FEI Classics and features the world's best horses and riders vying for their share of $US250,000 in prize money, as well as a shot at the Grand Slam.
Tomorrow's cross country will be followed by a second horse inspection before the showjumping, which is scheduled to finish on Monday morning (NZT).