HU $5 NL Holdem tourney

[Peter]

This weekend I started to play some 1 on 1 tournaments an paradise. I played some $5, $10 and $20 NL Holdem tourneys and did extremely well. After the first ten or so I had only lost one. Then I entered a $5 1 on 1 NL holdem tourney.
The first hand I get AQs in the BB and my opponent goes all-in. I felt he was messing around because it was only a $5 tourney and because of the speed he went all-in with it was almost as if he had decided to go all-in no matter what he got on the first hand.
I called.

Is this really an automatic call?

I guess what bothered me the most was that the tournament was over after the first hand without really playing.

Peter