That never happens except for hax. Believe me I've tried.
Adrian builds some of the best teams out there and is extremely skilled at what he does. I think in (one) of the last few matches against him I've played, unranked, I beat him. Now it wasn't on the ladder, and I did design my team in such as way to give me the greatest advantage against his (plus I knew his team fairly well because stall is more limited in the sets to be ultra effective). Adrian makes teams that are very consistent against most any of the common threats on the BH ladder, which is a feat in itself, but that consistency also comes with a few weaknesses. When all 6 of his Pokemon are alive, he's near unstoppable, but if one falls, especially the Chansey (the pink shinigami), it puts holes in his stall that he may or may not be able to fill. In addition, using the famous gtfo and cry % strategy, of tricking lots of scarfs (and assault vests) can really hinder or mess stall up. Also hazards can wear stall down because it relies on many switches. That said, it's no easy task whatsoever even though I know some of the weaknesses to his near perfect stall.
P.S.: I've also seen Adrian get bored against a stall team because it was taking too long xD so use stall teams everyone! jk