I think rigged betting may sound tempting but it is risky &  often leads to stress when the statistics bettors lose. Yes, match fixing &  corruption are common, as you can see from investigations like Operation Veto in football, where they were able to find more than 380 football match fixing cases in 15 countries &  sometimes even strange betting patterns involving referees.

But I would say that it is extremely difficult to systematically rig major league games on a continuous basis. Because these leagues have so many players &  billions of viewers, rigging these games is very risky &  the evidence for most games claimed to be scripted is weak. So I would say that statistics &  contextual analysis are still your best bet for sports gambling. Rig side concepts should never be a gamblers main strategy.