The Tennis Ball is associated with Jack.
In shape and color, it reflects the VW bug as it made its way towards The Overlook in The Credits.
In direct connection, Jack throws it against the Native American sand painting in a fit of boredom in No.25.
In No.26, he throws it down a hallway littered with symbols in the form of toys right before staring over the model of the hedge maze.
In No.44, Danny is lured to Room 237 via a tennis ball.
In No.45, Danny wears socks that are the same vibrant yellow as the ball.
In this image · No.25
The Tennis Ball’s Path
The tennis ball is a symbol of Jack’s boredom and distraction. Its path continues in No.26 and No.44.