Semaj Booker

In July 2019, Booker was involved in a road rage incident in Pierce County, Washington. According to the victim, Booker pulled up in a white sedan behind the man and said, "You cut me off and I have my kid in the car." Booker then allegedly punched the victim through the window, opened the door, and continued to punch him about 20 times. Booker then drove away when the traffic light changed. He was charged with second-degree assault in November.

Before making the move to play professionally, Booker played in a recreational league. On April 7, 2018, Booker would be one of about 50 or 100 people to officially travel to Garfield High School to tryout for the Seattle Ballers, one of eight teams created for the newly founded Junior Basketball Association (JBA). After the tryouts for Seattle concluded, Booker was named one of four players (at the time) to be confirmed for the newly formed team. He would make his professional debut for the JBA on June 23 against the Dallas Ballers at the H&PE Arena in Houston, Texas. In that game, he recorded 12 points, 4 rebounds, 3 assists, a steal, and a block as a starter in a blowout 121–103 win over the Dallas Ballers. In his next game a day later, he went on to become a bench player for Seattle in a 150–145 loss to the Los Angeles Ballers, which featured premiere player LaMelo Ball.

Throughout his high school tenure, he would go to four different campuses in Washington, at least one per each year of a regular high school tenure. In his sophomore season, he played for Lincoln High School in Tacoma. As a junior, he transferred to Curtis Senior High School in University Place, Washington. He also worked part-time as a referee at the time. He received a letter of interest from San Diego State University while at Curtis. Before his 18th birthday at the end of his junior year, he was involved with a serious fight that led to his suspension from school, and he attended summer school at Oakland Alternative High School in Tacoma. In his senior year, Booker transferred to Clover Park High School in Lakewood, Washington. During what would be his last year of high school, Booker would average 13.6 points, 7.3 rebounds, 2.0 steals, 1.6 assists, and 1.5 blocks per game in 20 games played. He gained interest from both Tacoma Community College and Evergreen State College, but Booker veered away from those places, eventually stopping himself from going to classes at Clover Park altogether at one point. He projected to go to a preparatory school in Illinois to finish high school properly, but couldn't in part because of the birth of his son, Mathayus King Blue-Booker, on December 22, 2016, and partially because of an arrest he had in February 2017, which would lead to a court case on July that year.

On January 14, 2008, he stole a 1986 Acura car from a neighbor, driving it up to 90 miles per hour (145 km/h)— having learned the skill through video games— before crashing during a police chase. In the following morning, after being excused from juvenile detention, Booker traveled to Seattle–Tacoma International Airport on a bus, without his mother's knowledge. He received a boarding pass from Southwest Airlines for a flight to San Antonio, Texas via Phoenix, Arizona, after lying that he was a 12-year-old with the last name "Williams" and that his mother was already in the boarding area. However, in San Antonio, he was stopped after attempting to board another flight to Dallas.

Semaj Booker (born June 25, 1997) is an American basketball player and former runaway child from Lakewood, Washington. He gained national attention in 2007, at age nine, for escaping from his home in Lakewood to San Antonio, Texas on his own, traveling by car as a driver and by airplane as a passenger. Booker grew up to become a standout high school basketball player, attending four different schools, including Curtis Senior High School and Clover Park High School. He most recently played for the Seattle Ballers of the Junior Basketball Association (JBA).