LEXINGTON, Ky. - Turning into the homestretch of the freshman sires contest this year, the Silver Deputy stallion Posse - with seven stakes winners and nearly $1.5 million in earnings - seemed home free. But a couple of other freshman sires have continued to ramp up the pressure on the front-runner, and one of them, Harlan's Holiday, is making a race of it to the wire on Dec. 31.