Unknown, Thought on this line?
Microgaming - €5+0.50|10/20 NL (2 max) - Holdem - 2 players
Hand converted by PokerTracker 4
Hero (BB): 330
SB: 670
SB posts SB 10, Hero posts BB 20
Pre Flop: (pot: 30) Hero has 9♠ 4♠
SB calls 10, Hero checks
Flop: (40, 2 players) 4♣ 8♠ 5♦
Hero checks, SB bets 20, Hero calls 20
Turn: (80, 2 players) 9♣
Hero bets 60, SB raises to 120, Hero raises to 290 and is all-in, SB calls 170
River: (660, 2 players) T♦
Nice , donk is mandatory , he has so many things willing to call but checking behind .
once he raises its an obv ai 
not sure if yoshiwa were talking about flop donk, so i`ll give my input. Flop donk is mandatory, there is very few good things that may happen after we ch/c flop. You actually get value otf, but my suggestion is to bet flop with intention of turning our hand into a bluff on many turns. Trying to realize our showdown equity with this hand on this board is suicidal imo
