In our experience, a quick flop call by an opponent usually indiciates weakness -- either a draw of some kind, or more often a pair that's not top pair. Perhaps Van Marcus realized that as well. He and Tae Jun Noh took a raised flop of . Noh checked to Marcus, then quickly called when Marcus bet 100,000.
The turn and the river were both checked through. Noh turned up for middle pair, which was enough to win the pot.