LONG LEG / LONG ARM
1. power, esp far-reaching power: the long arm of the law
2. make a long arm to reach out for something, as from a sitting position
a. a fielding position on the leg side near the boundary almost directlybehind the batsman's wicket
b. a fielder in this position
Thus, it is wrong to utter an expression like that:
I used a long leg to get the job.
I used a long arm to get the job.