Fair Grounds: The Grade II, $400,000 Risen Star at 1 1/16 miles (Kentucky Derby qualifying points 50-20-10-5) by Brian Nadeau #1 High North (15-1): Versatile son of Midnight Lute makes his 3-year-old debut for a potent Cox barn that’s having a banner meet and will look to pull off a surprise with a colt who…