The Lonely Stone Tower on the Four Enemies of Isaac Murphy

Flying P Stable and RA Hill Stable’s Lone Rock top dirt road marathoner in North America in 2021, is a 3-5 morning line favorite against four competitors in the Isaac Murphy Marathon overnight on May 3 at Churchill Downs.

The $160,000 Isaac Murphy, running at a mile and a half, highlights a program of nine races that begin at 12:45 p.m. ET. Due to its short track and heavy popularity, the race that was played early was the second race with a time of 1:14.

Few are eager to take on Lone Rock, who last year won five shares, including Isaac Murphy. Other notable wins come for Brooklyn Shares presented by Northwell Health (G2) at Belmont Park and the Shares of the After Purebred Care Alliance (G2) in Del Mar.

This year after a failed 1/16-mile Razorback Stakes (G3) race on February 12 at Oaklawn Parkwhere cadet Robertino Diodoro ran sixth, Lone Rock recovered to win the 1 1/2 mile Temperence Hill Stakes there on April 3, beating Oaklawn winner Handicap (G2) afterward. The Last Samurai Warrior .

Ordinary racer Ramon Vazquez is back on the Lone Rock, a 7-year-old boy due to Mighty Warrior .

Winchell Thoroughbreds’ Millionaire Ten-fold , the third in Temperence Hill, seems to be his main enemy. Tenfolds trainer, Hall of Famer Steve Asmussen, named Joel Rosario for the ride.

Current , Celerity and Hozier complete this field.