V has been on the table for an hour, not too much history, but I know he is a 5-T pro/reg, Asian male in 30s. Stack - $2.7k
Hero is reg, lost 2 big pots on the table before V sat down, current stack 3.8k.
OTTH -
Preflop - V open $30 in the btn, sb fold, hero has AKhh in bb 3bet to $120, V calls fairly quick. I think this is pretty standard line.
($245), flop T95ccc, hero c/c $100. Before the bet, V double checks his cards, read - V is very likely bet with Ac or over pair with a club and he probably doesn't have a set here.
($445), Turn As, hero c/c $300.
(1045), River 9o, hero checks, and V bets $750. Hero??
Is a river call pretty standard, expecting won sometimes and lost sometimes?