[Olback]

What is heros line here?

I checked hoping to check/fold or checkraise depening on the action in front of me. Does his huge overbet mean he is strong or weak?

#Game No : 2737216129
***** Hand History for Game 2737216129 *****
NL Texas Hold'em $20 Buy-in + $2 Entry Fee Trny:15870416 Level:2 Blinds(15/30) - Monday, September 19, 01:17:44 EDT 2005
Table Table 13991 (Real Money)
Seat 10 is the button
Total number of players : 8
Seat 1: batmanubc ( $770 )
Seat 2: Opus_Five ( $1020 )
Seat 4: DCHeroes ( $1100 )
Seat 5: Olback1 ( $775 )
Seat 7: FishECat ( $975 )
Seat 8: donfishes111 ( $655 )
Seat 9: fenceman69 ( $755 )
Seat 10: mikhailbros ( $1950 )
Trny:15870416 Level:2
Blinds(15/30)
** Dealing down cards **
Dealt to Olback1 [ Tc Td ]
DCHeroes folds.
Olback1 calls [30].
FishECat folds.
donfishes111 raises [80].
>You have options at Table 14515 Table!.
fenceman69 calls [80].
mikhailbros folds.
batmanubc folds.
Opus_Five folds.
Olback1 calls [50].
** Dealing Flop ** [ 9d, 5d, 9s ]
Olback1 checks.
>You have options at Table 14511 Table!.
donfishes111 is all-In [575]
fenceman69 folds.
Olback???