By Matt Ehalt Several sizable parlays cashed at SI Sportsbook during conference championship weekend, including a four-leg interception bet. There were many reasons to scream when the NFC championship game all but ended with Jimmy Garoppolo’s ill-advised interception. Those holding Rams moneyline tickets rejoiced. Same with those backing the 49ers against the spread (-3.5) who feared a potential bet-ruining pick-six. And then there are those who cashed an awesome four-leg parlay at SI Sportbook with that throw, which we’ll discuss further momentarily. View the original article to see embedded …