Zegarowski was born Aug. 3, 1998 in Hamilton, Massachusetts. His older brother is Michael Carter-Williams, the NBA Rookie of the Year in 2014. His older sister, Massey, plays NCAA Division I basketball for Bryant. Zegarowski also has a twin brother, Max, who plays for Franklin Pierce University. Both his parents, Zach and Amanda, played basketball in high school, and Amanda eventually became a coach. As a freshman at Hamilton-Wenham high school, Zegarowski averaged 20 points per game. He and his twin brother led the team to an undefeated season and the school’s first-ever Division 4 state basketball title. Both Zegarowski’s then transferred to Tilton School in New Hampshire for their sophomore campaigns. Marcus averaged 23 points, five rebounds and six assists per game as a junior. He led the team to the Class AA title game. He was named to the All-NEPSAC AA first team. As a senior, he was named NEPSAC AA player of the year, and he scored a career-high 57 points in a double-overtime win. He scored 24 points as his team won the Class AA championship. After high school, he committed to play college basketball at Creighton.
As a freshman, he was given one Big East Freshman of the Week award and was named to the Big East All-Rookie Team. Overall, he averaged 10.4 points, 3.4 assists and 3.2 rebounds in 28.6 minutes. As a sophomore, he averaged 16.1 points, 5.0 assists, 3.8 rebounds and 1.1 steals in 34.6 minutes. He was named to the All-Big East Second Team. and was an AP All-American Honorable Mention. As a junior, Zegarowski averaged 15.8 points, 4.3 assists, 3.6 rebounds and 1.3 steals in 33.6 minutes.
He was once again named to the AP All-American Honorable Mention team but made it to the All-Big East First Team and the Big East All-Tournament Team. He shot over 40 percent from three in each of his three collegiate seasons and finished his career with a 42.3 percent mark from deep.
— Profile by RotoWire