I think it is interesting how all the pundits and experts seem to think Pero Antic is the key to the series (outside of Teague). While it is true that Antic "torched" the Pacers for 16 and 18 respectively, I really don't think he is the problem.
Honestly, I believe Vogel understands this. If I were Vogel I would keep Roy planted near the key. Let Antic wonder around the perimeter all he wants, and not even challenge him out there. Why waste a slow footed attempt that just opens up the lane for Teague? I would keep Roy planted by the key, have the other 2 lock down on the 3 point shooters and then deny Teague from penetrating as best they can with Roy looming to help when anyone comes into his domain.
If Pero Antic scores 40 on the Pacers, then maybe the strategy changes. But I don't see it happening. I's not like he's a minutes warrior--guy plays 18-20 minutes a game.
On the other end, I would just have Roy go at him. Since Roy won't be expending as much energy if he lets Antic wander free, he should have the energy to establish good post position consistently. And if (big if) the Pacers could learn a decent entry pass angle (or a pass fake?), I think that would wear out Antic, and tired legs don't shoot outside jumpers very well.
The rest is just executing what they do best. I really believe the Pacers could take these guys down in 5 if they did this. The team will be giving Antic too much credit if they devise ways of stopping him. A waste of time and energy in my opinion.