river raise

[sacker]

ftops limit holdem. is this raise on the river bad?

#3287997604: FTOPS Event #11 (22618581), Table 106 - 50K/100K - Limit Hold'em - 6:05:34 ET - 2007/08/18
Seat 1: jaybert99 (1,000,648)
Seat 2: donhaka (604,067)
Seat 3: sacker (1,613,645)
Seat 6: pokerandmadden (294,640)
pokerandmadden posts the small blind of 25,000
jaybert99 posts the big blind of 50,000
The button is in seat #3
*** HOLE CARDS ***
Dealt to sacker [Kd Ks]
donhaka folds
sacker raises to 100,000
pokerandmadden folds
jaybert99 calls 50,000
*** FLOP *** [6s Kh Ad]
jaybert99 checks
sacker bets 50,000
jaybert99 calls 50,000
*** TURN *** [6s Kh Ad] [2h]
jaybert99 checks
sacker bets 100,000
jaybert99 raises to 200,000
sacker raises to 300,000
jaybert99 calls 100,000
*** RIVER *** [6s Kh Ad 2h] [4h]
jaybert99 bets 100,000
sacker raises to 200,000