i think easy call there, it is early in the touranment, hard to call but there are 4 to the straight there and it may be easy for him to miss seeing the flush. he could have a higher flush than you, or just be trying to represent the higher flush. it sucks being put in that position so early in a tournament. If i knew the stakes of the tournament and buy-in it may be easier. You do have plenty of chips if you elect to fold right there, which if its a higher buy in tournament and worht a lot, then i probably would and just wait til later to try and catch him. If its a small buy in touranment i would snap call, because chances are the tournament doesnt mean much to him and the money isn't really in his mind, hes just trying to push you off the hand, or hope you call with a 2 pair against his straight. I would call if its not worht much in the touranment. If its a $20 or more tournament, and worht a lot, then i would fold and wait for a better position and see what tendencies he continued with to see if i could catch him later.