The game is NL 20-man tournament where everyone starts with 1000 chips. I have around 1600 chips and blinds are 25/50. I get dealt 10 10 in the button and a guy raises it UTG+1 to 100 but it's 5-man shorthanded so it doesn't necessarily mean he has a big hand, if anything he's weak with the small raise. so i made it 400 to go. the guy right after me calls and he has 600 left. utg+1 also calls. 3 to the flop. flop is Q Q 9. SB goes all in for 600 chips. UTG+1 folds. I called but i felt it was wrong. The guy turns over Ace 9 and my 10's hold up. Did i make a mistake by calling? I had no read on the guy.

i think you have to call this, well played

If you were first to act, you would have bet out right? So, since he bet out, easy call IMO. If he caught a queen so be it, but you are good here more often than not IMO to someone who only called your raise pre-flop as opposed to re-raising. 8)

Nice hand.