Why the hell are you seeing a flop with

A) A weak ace
B) Unsuited
C) Unconnected

The whole idea is -EV preflop... you are hoping that no cards 10-k come an blatantly invalidate your 9, you are hoping that no A comes so you don't have to worry if your kicker is good or not (half the time it's not), you're hoping no flush or straight draws come, I mean there is no possible flop that is good for this hand.

Raise preflop 5xbb if you think you can steal to look like you're clearing out the fags, anyone with gold will reraise and you save yourself some money, you DEFINATELY don't want to see a flop here, unless you can magically predict a 9-high flop or 3 aces flopping. This looks like a "I limped in on the button so I can steal your shit play", what if one of them has a pocket pair or a ten and saw the same crappy flop as you did and is waiting to checkraise?