Blankenship scored from two yards out the put the Bobcats (2-1) up 31-17 early in the fourth.
The Thundering Herd (2-1) came right back as Rakeem Cato threw a 38-yard touchdown to Gator Hoskins, then forced Ohio to punt on the ensuing drive, but Cato was intercepted by Devin Bass on the next play.
Following a field goal by Ohio, Cato rushed for a touchdown to cut the deficit to three, but the following onside kick was recovered by the Bobcats to seal the game.
Tettleton was 25-for-38 with a touchdown and Matt Waters had 83 yards on six receptions.
Cato finished 30 of 44 for 367 yards for Marshall.
Tommy Shuler caught 9 passes for 95 yards receiving while Hoskins had 81.
The Sun Devils might have landed the most important recruit of the Todd Graham era after Kelley flipped from Oregon to ASU.
Penn State says it can't evaluate claims that Joe Paterno knew of molestation accusations by Jerry Sandusky as far back as 1976 because it has no records from 40 years ago.
ESPNDallas columnist Jean-Jacques Taylor and NFL Nation reporter Todd Archer discuss Jason Garrett's first interaction with Ezekiel Elliott.
This week's Pac-12 mailbag considers possible expansion, the state of the California Golden Bears and how the conference fared in the NFL draft.
SEC Network's Paul Finebaum reflects on Alabama head football coach Nick Saban's comments about the need for a commissioner in college football.
As the Big 12 moves closer to an expansion vote, who are the teams most likely to join the conference?