Spendthrift Farm LLC's Tuscan Sky (Vino Rosso) was among several horses Saturday morning tuning up for Pegasus World Cup Preview card held next Saturday at Gulfstream Park. Trained by Hall of Famer Todd Pletcher, the 3-year-old breezed a half-mile at Palm Beach Downs in preparation for the GIII Harlan's Holiday Stakes, a prep for the $3 million GI Pegasus World Cup Invitational Jan. 25 at Gulfstream. Tuscan Sky, who is coming off a runner-up finish in the Discovery Stakes at Aqueduct Nov. 3, turned in the fastest clocking (:47.89) at...