Poor concentration can often lead one into irresponsible gambling, which one may see a game that they are so confident that they will win if they place a bet, and this can of thing often makes one to easily lose control in their work, which often leads them into doing things on the wrong way just as you have highlighted. But, it will better if after working hours, one can engage into gambling, by then everything would have normal, which will prevent the poor performance and also prevent addiction too both in gambling and in your working place.
I don't think it's possible for a gambler to make the right call with gambling prediction while working. You will be having mixed feelings of work and the way to make the right decisions. I don't think for me I will be able to pick well especially when I see big odd and a team that can't do well. Bet can be confusing, the team you think will do well migjt not do well and the other one you think will do well might end up doing bad, this is why you have to be careful.
If you are gambling do it when you are out of work, professionally it doesn't make any sense. I can't imagine a medical doctor that have patient to attend to and check their conditions will want to be doing all that. What if something goes wrong and the company finds out, you are going to lose your job and if it's a professional job like medical, you may even lose your license. Please let's be guided on jobs.