Fresh off a dominant win over Vanderbilt, South Carolina opened as around a two-touchdown betting favorite over Missouri on Sunday. The Vegas Insider consensus line sat at South Carolina -13 early Sunday afternoon with the over/under at 43.5 points. [GamecockCentral: $1 for 7 days and 50% off first year] While Draft Kings also had the Gamecocks favored by 13 points, FanDuel set the early line at South Carolina by 14.5. The Gamecocks (6-3, 4-3 SEC) have won three straight after defeating Vanderbilt 28-7 on Saturday afternoon in Nashville. In addition to that win, Carolina has victories over Old…