I think that Ohio District 13 (Senate nominee Sherrod Brown) is still in play. Dem nominee Betty Sutton feels the need to run negative ads against her opponent, which ought to tell you something. And the Republicans have a great candidate, although even he has a tough time in this solidly Democratic district.
I don't think that there is any chance that OH-13 (or OH-06) will vote GOP when the Republican candidates for governor and senator are headed for a double-digit defeat statewide. More significantly perhaps, the NRCC is making no effort in OH-13 and Sutton has outspent Foltin by better than 2 to 1. The only independent poll I know of back in mid July had Sutton leading Foltin by 48% to 30% and there's little reason to think the gap has narrowed, especially when the Ohio GOP seems to be in worse shape now than it seemed then.