Basketball Black Hole
In basketball, a "black hole" refers to a player who, when passed the ball, will always shoot or try to make a play themselves. Once the ball goes to the black hole, it isn't coming back out. These players do not pass as often as they should, and the results can be devastating for a team.
The term "black hole" comes from the actual black hole phenomenon, in which there are spots in space where gravity is so strong that literally everything gets sucked into it.