When it comes to Saints vs. Texans on Monday Night Football (7:10 p.m. ET kickoff), don't bet against SportsLine senior analyst and Saints expert Larry Hartstein.

Hartstein is 22-11 in his last 33 picks involving New Orleans, a stunning 67 percent cash rate. Moreover, he's coming off a season in which he went 61-47 overall on NFL picks. Anyone who has followed him is WAY up.

Now, with the Saints favored by 6.5 over Houston, we can tell you Hartstein is leaning Over, but his much stronger play is on the side. Hartstein says a critical x-factor makes one side of this spread a must-back. You need to see it before you make any picks of your own.

Who wins Saints vs. Texans on Monday Night Football? And what critical X-factor makes one side of the spread a must-back? ... Join SportsLine right now to see which side of the Saints vs. Texans spread is a must-back, all from the Saints expert who's 22-11 in his last 33 picks involving New Orleans!