DUBAI, UNITED ARAB EMIRATES -- The final day of the Keeneland September Sale is one where you blink and you miss it. It's a leaner session to begin with numbers-wise and the action is fast....as in, lightning fast. It's a real meat-and-potatoes sort of way to wrap up two exhausting weeks of trade. But, on rare occasions, there are diamonds in the rough to be found. Just ask Nadir Khassanov and while you're at it, talk to the people at Mulholland Springs. On Friday, Sept. 24, 2021, Khassanov, a bloodstock...