by Jessica Martini, Christie DeBernardis & Christina Bossinakis LEXINGTON, KY - The Keeneland September Yearling Sale, which began shortly after 1 p.m. Monday afternoon, jumped immediately into high gear and, by the time the dust had settled at the conclusion of a frenetic session of bidding, nine yearlings, led by a $2.5-million son of Quality Road, topped the seven-figure mark. During last year's first session, three horses sold for seven figures and the entire sale produced 15 horses to pass that mark. "It was a great day, from beginning to...