As some 1 who has betted on sports recently, and still am here and there for partial supplemental income, from what I've seen, the only time when they May have an effect is a big event where people who normally don't bet Do for a Championship Match, such as Super Bowl, Champions League Final, Kentucky Derby, and so forth. The biggest events r the most heavily wagered on events in any calender year. If u really want a case example, examine the NFL regular season game played between the SD Chargers and Pittsburgh Steelers. Because a DEF TD was overturned when it wouldn't have affected the final outcome, it changed the result from Pitt covering a 3 point spread, to not covering. Why important? There was $60 mill bet on this game and most was on the Steelers. THE HEAD REF FOR THE GAME 2 DAYS LATER ADMITTED THE ORIGINAL CALL OF TD SHOULD'VE STOOD! That's the most recent example I know of regarding a big game, and there's been plenty of others, even in college. Might also be worth a look @ the Serie A Scandal (Italy's top division of football, or as USA knows it as, soccer), where matchfixing was rampant there.