villain is not a reg... not much of a read

No-Limit Hold'em, $1.00 BB (9 handed) - Hold'em Manager Converter Tool from FlopTurnRiver.com

saw flow

UTG+1 ($18)
MP1 ($119.45)
MP2 ($106.35)
MP3 ($100)
CO ($20)
Button ($97.90)
SB ($144.90)
Hero (BB) ($101)
UTG ($106.65)

Preflop: Hero is BB with K, K
7 folds, SB raises $2.50, Hero raises $8, SB calls $6

Flop: ($18) 4, 6, 8 (2 players)
SB checks, Hero bets $14, SB calls $14

Turn: ($46) 6 (2 players)
SB checks, Hero bets $33, SB calls $33

River: ($112) 9 (2 players)
SB bets $45, ???

gotta call right?

hand 2

18/10/2 in not a lot of hands

No-Limit Hold'em, $1.00 BB (7 handed) - Hold'em Manager Converter Tool from FlopTurnRiver.com

saw flow

UTG ($19)
MP1 ($100.35)
MP2 ($133.65)
CO ($21.85)
Button ($151.35)
SB ($64.60)
Hero (BB) ($108.05)

Preflop: Hero is BB with 7, 7
1 fold, MP1 raises $4, MP2 calls $4, 3 folds, Hero calls $3

Flop: ($12.50) J, 3, 7 (3 players)
Hero checks, MP1 bets $6, 1 fold, Hero raises $19, MP1 calls $13

Turn: ($50.50) 4 (2 players)
Hero bets $33, MP1 calls $33

River: ($116.50) 6 (2 players)
Hero bets $52.05 (All-In),

Any merit to checking turn???