Apprentice jockey Santos Rivera is off his mounts on Friday because of incomplete coronavirus paperwork, according to a track official.

Rivera recently relocated to Southern California from Golden Gate Fields but was unable to provice racing officials at Los Alamitos with proper documentation.

Rivera was booked to ride six of the eight races.

In the third race, Alexis Centeno has the mount on Raise a Halelujah (9).

In the fourth race, Centeno rides Big Bad Gary (7).

In the fifth race, Geovanni Franco rides Slew's Screen Star (9) with an amended weight of 122 pounds.

In the seventh race, Heriberto Figueroa rides Black Drop with an amended weight of 122 pounds.