Hi! I'm new to poker and have been playing online micro-stake SNGs and MTTs on ignition. My question is if you are in an MTT, when should you fold or call an all-in bet pre-flop? The example hand I had was at a 9-handed table early in a $5 buy-in $500 guarantee MTT with 2 positions paid, blinds were 125/250 and I had a less than average stack of 8,470. I raised to 750 from UTG with AJo, folds all around to the big blind who raised all-in with 7,000. I called. Villain had pocket 9s which held out to win the pot and then I busted a few hands later. Was that the right call? If not, at those stack levels, when should you call or fold an all-in bet pre-flop? Thanks in advance!