LEXINGTON, Ky.– Scot Waterman, the executive director of the industry-funded Racing Medication and Testing Consortium since its formation in 2003, has submitted his resignation, effective at the end of April, according to two officials who work closely with the organization.

The resignation introduces doubts about whether the RMTC will remain in operation, according to the officials. Waterman, who oversees a small staff, has been the driving force behind the organization, which receives the brunt of its funding from horsemen’s groups and other industry sources.

Mobile-phone applications that allow users to watch and bet on horse races are creating fresh challenges for an industry that has historically trailed behind the curve on technology and still struggles with the distribution of revenue from off-course wagering.

Retired Hall of Fame jockey, he is the subject of the recently published biography "Above It All: The Turbulent Life of Jose Santos," by journalist Bill Heller

Birthdate: April 26, 1961, in Concepcion, Chile

Family: wife, Grace; sons Jose Ricardo, Jose Jr.; daughters Sophia, Nadia, Selena, Savannah

Got into racing because. . . "Family tradition. My father was a jockey, trainer, and assistant trainer. He taught me and three other brothers how to ride."

The comments from the 2011 past performances of 3-year-old colt Elite Alex read as follows: “5-wide, middle move,” “6-wide 1/4-pole, modest interest,” and “6-wide 1/4-pole, improved position.”

The connections of Uncle Mo believe they have a reason why their horse did not run up to expectations in last weekend’s $1 million Wood Memorial, and are still hoping to get last year’s 2-year-old champion to the Kentucky Derby on May 7.

Midnight Interlude and Comma to the Top, the first two finishers of the Santa Anita Derby last Saturday and the only horses from that race expected to start in the Kentucky Derby at Churchill Downs on May 7, resumed racetrack training Wednesday.

Midnight Interlude jogged at Santa Anita, while Comma to the Top did the same at Hollywood Park.

FLORENCE, Ky. – Kentucky racing regulators denied a license to the controversial trainer Richard Dutrow on Wednesday, likely causing the scratch of two horses he has entered in stakes races at Keeneland and signaling that his career has begun to be imperiled by both present and past violations of racing rules.

HALLANDALE BEACH, Fla. - Jockey Eibar Coa, who suffered a broken neck in a spill following the conclusion of the sixth race here on Feb. 18 that initially left him with limited movement from the neck down, will be released from Memorial Regional Hospital South on Thursday.

Coa will leave Memorial Regional “walking,” according to a press release distributed by the hospital on Wednesday.

VIDEO: Eibar Coa takes first steps since riding accident

Members of the board of directors of the Breeders' Cup will now serve four-year terms instead of two as part of by-law changes approved by the organization's members and trustees on Wednesday, the organization announced.

In the wake of his stunning defeat as the 1-9 favorite in Saturday’s $1 million Wood Memorial, Uncle Mo underwent a battery of tests at Belmont Park on Tuesday, his connections said in a press release Tuesday night. The results of the tests likely won’t be available until Thursday, but the release said Uncle Mo was "completely sound."