The jockey fell of his horse.

Nobody can ever understand what a jockey is saying in TV.

It's the simple past and the past participle of the verb - to jockey (for a position). The noun is a jockey.

Stable Wars - 2013 Jockey for Position 1-2 was released on:

USA: 29 August 2013

Animaniacs - 1993 You Risk Your Life I Got Yer Can Jockey for Position 1-27 was released on:

USA: 25 October 1993

Most disc jockeys make between $5,000 and $40,000. The exact amount depends on the type of disc jockey, the disc jockeys popularity, the location of the disc jockey, type of payment, and whether the disc jockey is a hobbyist.

For instance, a mobile disc jockey may be paid $800 for one performance, but they may only perform twice a month. Meanwhile, a club disc jockey may be paid $10/hour but with a full time position, the club disc jockey would be making just as much as a mobile disc jockey without including tips. Also take into account that a mobile disc jockey has expenses that a club disc jockey doesn't and you'll see that the club disc jockey in my example actually make more that the mobile disc jockey.