Actually Duke switches on most screens and Kelly can hold his own against 3's especially 3's that have Scott Wood's skill set.
Every team switches on screens?...it's what you do on defense and why people run screens, to create mismatches.
I grew up a Duke fan/still watch every game, I know what kind of player Kelly is. The double screens and reverses Wood runs along the baseline...6-11, slow ass Ryan Kelly cannot keep up with. The 3's from GT the other night obviously couldn't, and Kelly sure as hell won't. Sheed, Murphy, Amile, and even Curry will be on Wood more than Kelly ever will.
I mean, essentially with your original assumption of Kelly guarding Wood...you're having who exactly guard Leslie at the 4? Mason? Then Sheed guard Howell? Your original assumption was laughable...now with your "Duke switches on screens" comment...it's getting sadder.