Final answer:
The central idea of the excerpt is the significant challenges Jackie Robinson would face as the first African American in Major League Baseball and his role in pushing for racial equality.
Step-by-step explanation:
The central idea of the excerpt from Jackie Robinson's autobiography, I Never Had It Made, is about the challenges and racial barriers Robinson faced as he was poised to become the first African American to play in Major League Baseball in the modern era. Branch Rickey, president of the Brooklyn Dodgers, candidly acknowledges the racism and hardship Robinson will endure, from beanballs to racial slurs, and assesses his determination and courage to withstand it. Rickey's dialogue emphasizes the weight of Robinson's potential impact on the sport and society, reflecting the ultimate aim of not just integrating baseball but also advancing racial equality.