NL5 TPTK en 3bet pot monocolor vs 2 jugadores

El open raiser es un 19/13 y el que callea es un 28/1. No tengo mucho más dato que eso.
Cbet?

Hand converted with online PokerStrategy.com hand converter:

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$0.02/$0.05 No-Limit Hold'em (9 handed)

Known players:
[tg]CO$5.14:///////;BU$6.35:///////;SB$8.10:///////;BB (Hero)$7.03:///////;UTG1$5.12:///////;UTG2$4.97:///////;MP1$5.00:///////;MP2$6.70:///////;MP3$16.42:///////;[/tg]

Preflop: Hero is BB with A:d, K:d.
4 folds, MP3 raises to $0.15, CO folds, BU calls $0.15, SB folds, Hero raises to $0.66, MP3 calls $0.51, BU calls $0.51.

Flop: ($2) 2:c, K:c, 9:c (3 players)
Hero ?

Final Pot: $4.