According to a spectator, Patrick Johnson got the rest of his chips in preflop against an opponent and was at risk.

Patrick Johnson:
Opponent:

Johnson found trips on the flop, but unfortunately for him, the flop gave his opponent a boat. The turn left Johnson one card away from hitting the rail, but the spiked the river to give Johnson the better boat and keep his tournament hopes alive.

Player	Chips	Progress
Patrick Johnson	26,000 -4,000	-4,000