04/14/2011 2:17PM

Santa Anita: Thursday's scratches

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Here are the changes for Thursday's eight-race program, which will be run under ideal conditions with clear skies and temperates in the 60s.

In the first race, a two-furlong dash for maiden claimers, Warren's Dr. Boo, the 7-2 morning-line favorite, is withdrawn because of unsoundness, according to track officials. Tribal Mobile is scratched from the also-eligible list.

In the third race, Rock Solid King, a 3-1 chance in a $10,000 claimer, is out because of injury.

The fifth race has been reduced from seven runners to six with the withdrawal of Eyesablazin because of illness.

In the eighth race, Imperatriz, the 8-5 morning-line favorite, Lucky Sis, who was 9-5, and Mystery Bird, are out because of illness.