Yes.. let's see if Tressel can...
Tressel's first recruiting class was prior to the 2001 season. Thus, the last class of Coops players was the 2000 class. (Yes, we can probably reasonably argue that most of the 01 class was Coops too, but... it doesn't matter here, lol)
Ohio State's last loss to Michigan, of course, was 2003. The class of 2000's 4th year, or - leaving out 5th year seniors - the last year Tress had any players who weren't his.
Tressel is thus 5-0 with his own players.
Considering possible 5th year Sr's of Coops - they're still 4-0. And, even if we give Coop credit for parts, or even the bulk, of the 01 class and consider 5th year players, Tress is 3-0.
Yep.. anyway you slice it, Tressel's done just fine with his own players.