Basketball is a popular game at RSJMS amongst both boys and girls. A state of the art basketball court is available on the school premises which also serves as a lawn tennis court. It is one of its kind in Delhi. A well-planned practice regime and Inter Academy matches keep the players on their toes. Practice sessions for students of classes P-2 to P-5 (boys and girls) are held during the 0 period and after school hours on Monday, Wednesday and Friday.