No! It may indicate you have an addiction and you do NOT want that being conveyed to your potential employer. Besides, it's just a hobby. Unless it provides some necessary or beneficial skills to your position, it's just about as relevant to them as the fact that you use pillows when you sleep or that you jog in the morning.

It really depends what your resume is being used for. Anything outside the industry of gambling might be looked down upon. Anyways, if you want some tips on how to sports bet properly, you can check out this site

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I guess it depends on the job that you are applying for, but some people look at it like a hobby, so a job prob wouldnt care to see that you gamble, unless maybe its professional.