Sport in the Dominican Republic and the championship game that year brought in over $7,000 and commercial pressures led to the sport becoming a semi-profession in the Dominican Republic. Rafael Trujillo became president of the Dominican Republic in 1930 and he helped baseball soar in popularity as the sport gained a political connection. By the end of the 1930s, many of the finest Negro League players from the United States and Cuban players played baseball in the summer in the Dominican Republic as they were paid a fortune in order to come play. Jackie Robinson broke the color barrier in Major League Baseball in 1947
Eri-Aaroni grew to be a handsome and noble-looking horse who differed from the contemporary ideals of Finnhorse breeding, which favored a stockier, work horse look. Ahlqvist raced Eri-Aaroni occasionally at Turku. Eri-Aaroni was noticed there, and horse dealer Matti Takanen bought him from Ahlqvist for 75 000 Finnish marks. Then, in 1937, the well-known horseman Fritz Buttenhoff bought the now 5-year-old Eri-Aaroni from Takanen for 100 000 marks, corresponding to c. 34 000 Euros, and took the stallion to his estate in Vyborg. In Vyborg Eri-Aaroni was groomed, trained and raced by Arvi Räikkönen. In 1939 Eri-Aaroni, now 7 years old,