Final answer:
Matthew Robinson was Jackie Robinson's older brother and played an important role in his life. He was a talented athlete himself and served as an inspiration and mentor to Jackie. Matthew's impact can be seen in Jackie's achievements and his challenge of segregation in sports.
Step-by-step explanation:
Matthew Robinson was the older brother of Jackie Robinson. Although not as widely known as his brother, Matthew played an important role in Jackie's life. He was a talented athlete himself and served as an inspiration and mentor to Jackie, encouraging him to pursue sports. Matthew's accomplishments and impact on Jackie can be seen in how Jackie excelled in football, baseball, and track at UCLA and went on to challenge segregation in the military and become the first African American star player in the Major Leagues.