Complex sentence: Shuk rode in the Kentucky Derby, the Preakness Stakes and the Belmont Stakes with his best finish coming in the 1955 Preakness with Montpelier Stable's colt Saratoga who finished second to Nashua.
Split into simpler sentences: Shuk rode in the Kentucky Derby, the Belmont, and the Preakness. His best finish was in the 1955 Preakness with Montpelier's Saratoga, who finished second to Nashua.