An investigation is underway at Parx Racing after jockey Eliseo Ruiz is under scrutiny for his actions — or apparent inaction — in the stretch run of the ninth race on March 31 in Bensalem, Pa. Thomas Chuckas, the director of the Bureau of Thoroughbred Horse Racing for the Pennsylvania Horse Racing Commission, confirmed the investigation to the Paulick Report . Ruiz was aboard No. 5 Bailout Billy for trainer J. Guadalupe Guerrero, and looked like he had a decisive win in the bag before his