When one is at a party, or other social event you keep an eye on a person who is likely to make some key "plays"
Usually a guy who is hitting on a particular girl, but the inverse could also apply. Occasionally used for someone who is generally amusing at a social outing.
Derived from sports such as Rugby, Football, Basketball, where the camera tracks one particular player on the team, normally the play maker.
1. Ive got player cam on Flynn tonight, I know he's keen on her, lets see if he makes a move.
2. Tom: Hey Tim are you going to make a move on Kate tonight?
Tim: Yeah, but I've got player cam on Jack, it could be a bit of a dog fight I want to make sure I can suss out the competition.