Dr. Karev and Dr. Hunt are both standing outside and they are both soaking wet. When Dr. Hunt says that the blue team wins, Dr. Karev puts his hands up. Very briefly you can see that Dr. Karev is dry. In the very next shot he is soaking wet again.
In the scene where April pulls the plastic bag off Alex to cover her "patient", she rips the bag in half, with some remaining over Alex shoulders. However, to cover her "patient" April appears to use the whole bag and in the next frame, the bag has completely disappeared from Alex, despite him not moving from his "patient's" side.