Tatis agreed to receive money from BLA when he was just a budding prospect in exchange for part of his future salary. Only a small percentage of minor leaguers make it to the major leagues, and even a smaller chunk sticks long enough for the big paydays of salary arbitration and free agency. And Big League Advance develops computer programs to try to predict future All-Stars and then tries to invest in those players before they are known, well, commodities. “For us as a company, it’s really a testament to our modeling capabilities and how well we’ve been able to predict success of mino...