*Not a check raise :/

And occured on the main Sunday tournament 100€/100k guaranteed on PS.fr/es/pt
Something like 20-25 players left if I recall correctly.

No info on villain except that he is austrian and seems like he at least isn't terrible.

PokerStars No-Limit Hold'em, 100 Tournament, 12,500/25,000 Blinds 3,125 Ante (8 handed) - PokerStars Converter Tool from http://www.flopturnriver.com/

UTG (t568,309)
UTG+1 (t343,454)
MP1 (t1,112,001)
MP2 (t754,616)
CO (t232,218)
Button (t1,495,568)
SB (t644,057)
BB (t1,008,951)

BB's M: 16.14

Preflop:
2 folds, MP1 raises to t52,500, 4 folds, BB calls t27,500

Flop: (t142,500) 6, 5, 10 (2 players)
BB checks, MP1 bets t65,000, BB calls t65,000

Turn: (t272,500) 7 (2 players)
BB checks, MP1 bets t179,850, BB calls t179,850

River: (t632,200) 10 (2 players)

1- First question here, with what range do you lead river? What sizing ?

BB bets t164,372, MP1 raises to t811,526 (All-In)
Total pot: t960,944

2- I lead small and he jams after 30sec+ in the tank. What hands are you calling with?

I have
I think the spot is pretty tough mostly because of my sizing
Since I donkbet small it looks like a blocking bet and I induce actions from worse value (AT mainly) and random bluffs.
However I think he has lot of better values (77,66,55,89 or a random T7) and his sizing is on the bigger size (even if it's just one pot)

In the end I think I'd fold much more easily had I bet 330k.

Thoughts?

Result:

x/jam turn

hand illustrates pretty well why leading river is awful when you dont know what to with a straight after getting shoved on. x/decide river between x/c and x/jam.

Although I agree that leading the river is highly debatable, I'm not convinced jamming the turn is the best line. I feel like it would be losing value vs lot of his one pair hands

As played, in the end I think I need to call because I've under repped my hand so much and my perceived range is pretty weak, so a competent player could turn the bottom of his range into bluffs.
But my sizing is horrible, I should make it half-2/3rd pot and bet fold.

I know a lot of players never lead any hand here but I think there is merit in leading river with some part of my range. 43s might be just on the edge of c/call though, I'm not sure