COLUMBUS — Ohio State had the weekend off in Week 3 after playing just two games to open the season. The No. 3 Buckeyes are expected to rout Marshall when they return to action inside the Horseshoe on Saturday. They opened as a 40.5-point favorite over the Thundering Herd on Sunday, six days ahead of the matchup. The total is set at 51.5 points. The folks in the desert seem to believe Ohio State will win by a score of 46-5. Marshal is 1-1 on the season, beating Stony Brook 45-3 before losing on the road at Virginia Tech 31-17 on Sept. 7. Like Ohio State, Marshall had an idle week in Week 3 and…