No real reads on villain.This hand happened 17 hands ago and it's the only hand in the match that went to sd,so that's why I'm posting it.Please comment river,then see the spoiler and then comment on the 2nd hand
No-Limit Hold'em Tournament, 10/20 Blinds (2 handed) - Hold'em Manager Hand Converter from HandHistoryConverter.com

BB (t1620)
Hero (SB) (t1380)

Hero's M: 46.00

Preflop: Hero is SB with J, 7
Hero bets t35, BB calls t25

Flop: (t90) 5, K, 2 (2 players)
BB checks, Hero bets t55, BB calls t55

Turn: (t200) 9 (2 players)
BB checks, Hero checks

River: (t200) 7 (2 players)
BB bets t100

Total pot: t400


Ok,that's the hand where I don't know what to do.Please comment,then see the spoiler and comment again
Thank you all
No-Limit Hold'em Tournament, 15/30 Blinds (2 handed) - Hold'em Manager Hand Converter from HandHistoryConverter.com

BB (t1559)
Hero (SB) (t1441)

Hero's M: 32.02

Preflop: Hero is SB with A, 8
Hero bets t61, BB calls t46

Flop: (t152) J, A, 5 (2 players)
BB checks, Hero bets t95, BB raises t240,

first hand looks fine
2nd hand just call the flop raise, your cbet is really big though on a dry flop like that and your raisezize pre as well

Stop raising crazy amounts.And spamz,i dont get why you say the c bet is big?Doesn't seem that big to me.And he 2xed pre.WTF?

pot is 152 on flop @ 15/30, so he didn't minraise
and flop he bet like 2/3 pot which is huge for this texture

Yeah, 2/3 pot bet is huge for this rainbow dry flop. I'd just flat and see what he does on the turn. If you shove here, no better hands are likely to fold and no worse ones to call. And no, people don't always 3bet w/ A8+, sometimes they just flat with AJo (and that's what I would sometimes do readless and/or early in a match).

He's the one with the crazy amounts.I'm raising 61 to make my chips xxx0 if I lose the pot .The HC shows the amount of the raise without the SB =so small blind is 15+61=76,and 76+76=152

P.S. mela I think that he'll 3 bet with A8+ because the match was mainly preflop and I think with hands that strong he is reraising me because I was opening 95% of my buttons over 30 hands.

my bad lol,but still 2,5xing can't be bad 45 bb deep,could it?

That makes sense, but you provided no such information in the OP. I see "no real reads" in the OP and that no hands went to showdown except one :P