With most of Moss Point's experienced players graduating, Booker switched to point guard for his junior year. In an early December game, Booker outscored the entire Ocean Springs High School team 40–39 through three quarters en route to a 48-point finish as Moss Point won 100–55. After the game, a Sun Herald reporter wrote of Booker, "He's extremely athletic, can shoot the lights out and plays with a high degree of energy no matter if he's on offense or defense. Booker uses his quickness and long wingspan to deny pass after pass. And when he gets his hands on a steal, he knows exactly what to do with it. " He followed up this performance with a 30-point outing, including 7 three-pointers, in a win over 54–37 win over Laurel High School in the second annual Melvin Booker Shootout, named in honor of his father. The following week, Booker left a game against Harrison Central High School in the third quarter with a sprained MCL; he had scored just 9 points, but grabbed 7 rebounds.