100nl TT, wtf you shove river?

[Wi11i]

31/12/1.45 aggr % 21.7 nach 410 hands

lilil ($90.77)
knarze ($99.50)
fxgrind ($15.78)
wardo89 ($101.38)
mvance ($107.15)
D1RKD ($112.06)

lilil posts (SB) $0.50
knarze posts (BB) $1

Dealt to D1RKD :tc :ts
call, call, call,
D1RKD raises to $7
fold, call, fold, fold, fold,

FLOP ($17.50) :2d :5s :9c
check,
D1RKD bets $12
knarze calls $12

TURN ($41.50) :4d
check,
D1RKD bets $31
knarze calls $31

RIVER ($103.50) :6s
knarze bets $49.50
D1RKD has 10 seconds to react