PokerStars No-Limit Hold'em, $2 BB (6 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

SB ($271.95)
BB ($168)
UTG ($186)
MP ($709.95)
Hero ($282.10)
Button ($210.70)

Preflop: Hero is CO with 3, 3.
UTG raises to $6, MP calls $6, Hero calls $6, 1 fold, SB calls $5, 1 fold.

Flop: ($26) 8, K, Q (4 players)
SB checks, UTG checks, MP checks, Hero checks.

Turn: ($26) 8 (4 players)
SB checks, UTG checks, MP bets $12, Hero raises to $40

MP is a regular, but i think he is a mediocre player. I've seen him make small value bets of 40% or 50% of the pot before when he has middle pair.