25Z Call vs flop x/r and barrel?

Posted 6 years, 3 months ago

Blinds: $0.10/$0.25 (6 Players) BN: $44.83 (Hero)
SB: $57.74
BB: $25.37
UTG: $44.19
MP: $49.25
CO: $25.00

BB is marked as a rec

Preflop ($0.35) Hero is BN with K K

3 folds, Hero raises to $0.50, SB folds, BB calls $0.25

Flop ($1.10) 9 3 9

BB checks, Hero bets $0.70, BB raises to $2.20, Hero calls $1.50

Turn ($5.50) 9 3 9 6

BB bets $2.90, Hero calls $2.90

River ($11.30) 9 3 9 6 J

BB bets $8.90

Is this a super standard call down, unblocking Ks and 78s? Also what would be the worst hand to call down with in this spot?