River decision vs. Bill Ivey in $100r

[RandALLin]

I have 4875 on river and he bets 2k into 2400.

PokerStars Game #13511255829: Tournament #68052847, $100+$9 Hold'em No Limit - Level V (75/150) - 2007/11/27 - 21:11:00 (ET)
Table '68052847 24' 9-max Seat #2 is the button
Seat 1: armageddon99 (11025 in chips)
Seat 2: mman_status (8760 in chips)
Seat 3: RandALLin (6000 in chips)
Seat 4: AA_Milo (10785 in chips)
Seat 5: yoshdog22 (8150 in chips)
Seat 6: Bill Ivey (11825 in chips)
Seat 7: ryanbluf (12540 in chips)
Seat 8: LOCKDOWNLEO (4125 in chips)
Seat 9: John Dow (5790 in chips)
RandALLin: posts small blind 75
AA_Milo: posts big blind 150
*** HOLE CARDS ***
Dealt to RandALLin [9s 9h]
yoshdog22: folds
Bill Ivey: raises 300 to 450
ryanbluf: folds
LOCKDOWNLEO: folds
John Dow: folds
armageddon99: folds
mman_status: folds
RandALLin: calls 375
AA_Milo: folds
*** FLOP *** [2c Tc 2d]
RandALLin: checks
Bill Ivey: bets 675
RandALLin: calls 675
*** TURN *** [2c Tc 2d] [Qc]
RandALLin: checks
Bill Ivey: checks
*** RIVER *** [2c Tc 2d Qc] [Th]
RandALLin: checks
Bill Ivey: bets 2000
RandALLin: