One of four Kentucky Derby preps run Saturday, the $800,000 GIII Southwest S. at Oaklawn Park was the richest. It also promised to be the most wide-open betting contest and it didn't disappoint as a mud-splattered 11-1 MYSTIK DAN (c, 3, Goldencents--Ma'am, by Colonel John) pulled the upset for trainer Kenny McPeek. Last fall's Ed Brown S. winner Just Steel (Justify) got up for second while GIII Street Sense S. winner Liberal Arts (Arrogate) secured third. The Southwest offers points on a 20-10-6-4-2 scale for the Road to the Kentucky...