PokerStars No-Limit Hold'em Tourney, Big Blind is t20 (2 handed) converter

BB (t1490)
SuperSac (t1510)

Preflop: SuperSac is Button with , .
SuperSac calls t10, BB raises to t40, SuperSac calls t20.

Flop: (t80) , , (2 players)
BB checks, SuperSac checks.

Turn: (t80) (2 players)
BB checks, SuperSac checks.

River: (t80) (2 players)
BB bets t1450 (All-In), _____

seems like a huge overbet to me, and i'm thinking my 8 may be good...thoughts?