When the starting gates opened for the 145th running of the Kentucky Derby Starlight Racing partners had two   horses to cheer for!Improbable, breaking from post position #5, stalked the leaders throughout the early, middle and later parts of the race but could do no better than 5th–placed 4th after the disqualification. He is pointed for the Grade 1 Preakness Stakes.   Cutting Humor, breaking from post #10 and with Hall of Fame jockey Mike Smith aboard, followed a wide trip into the first…