Jr. Street is a playable court in Mario Hoops 3-on-3. It is the second court in the Star Tourney.
The main focus of this court is the giant slot machine in the back. To play the slots, teams must acquire Slot Coins from the ? Panels on the court. Sometimes, one or more of the ? Panels will turn purple. Dribbling the ball over the panel while it is purple gives that team a Slot Coin. Up to three Slot Coins can be carried at a time and each one opens up new possibilities for lining up the pictures on the slot machine. The first Slot Coin allows for a match in the middle row only. The second opens up all three rows. Finally, the third Slot Coin opens up diagonals.
If a team has any Slot Coins when they make a basket, the slots start spinning, awarding the following prizes if three of the following symbols appear in a row or diagonally. When this happens, a fanfare can be heard, along with some fireworks.
Sometimes, 2 of the pictures match in two rows, always being the extra point pictures, not the multipliers. So, three Mushrooms and three Fire Flowers adds 50 points to the basket.