Mike "Top Dog" Tierney has a gift for picking NFL totals. Since the start of last season, the veteran national sportswriter is an insane 52-29 on Over-Under picks. Anyone who has followed his picks has netted a profit of $2,041. Now, Tierney has dialed in on Super Bowl LII, which has a total of 48. He has identified one major key angle that supports his confident position on this wager. SportsLine members already know what it is... Join SportsLine now to learn the X-factor that will send SUper Bowl LII Over or Under, all from the man who's a blistering 52-29 on NFL totals!