6max $1,50 AKs Post Flop

Poker Stars, $1.32 Buy-in (10/20 blinds) No Limit Hold'em Tournament, 6 Players
Poker Tools Powered By Holdem Manager - The Ultimate Poker Software Suite.

MP: 1,500 (75 bb)
CO: 1,490 (74.5 bb)
BTN: 1,470 (73.5 bb)
Hero (SB): 1,510 (75.5 bb)
BB: 1,500 (75 bb)
UTG: 1,530 (76.5 bb)

Preflop: Hero is SB with K A
UTG calls 20, MP raises to 40, 2 folds, Hero raises to 120, BB calls 100, UTG folds, MP calls 80

Flop: (380) 8 7 K (3 players)
Hero bets 200, BB folds, MP raises to 580, Hero raises to 1,390 and is all-in, MP calls 800 and is all-in

Turn: (3,140) 6 (2 players, 2 are all-in)
River: (3,140) K (2 players, 2 are all-in)

Results:

Hi,

Villain is unknown. I think he can raise a lot of times Kx here.

What do you think?

Thanks