Basketball © 1979 Atari, Incorporated.
Model CXL4004
The game title says Atari Basketball on the screen, but the packaging simply says Basketball.
Known bug:
If you jump at the top of the screen, your player will all but disappear (except for his feet) behind the area reserved for the scoreboard.
You won't overshoot the basket if you shoot from the corners.
Game's ROM
Game's screenshots.