Pennant Man by Daniel Wyatt

Professional baseball hasn't always been integrated. Up until the 1940s, there were white leagues and negro leagues. Regardless of talent, white team owners fought long and hard to keep blacks from entering their exclusive clubs. Then the Brooklyn Dodgers took the other owners on by scouting two black players of equal talent. The goal -- two players breaking the color line together...

One was Jackie Robinson. The other had a past.