Dodger Stadium on what was supposed to be Major League Baseball's opening day on March 26 in Los Angeles. Mario Tama/Getty Images hide caption toggle caption Mario Tama/Getty Images Coronavirus Updates Major League Baseball Joins The Fight Against Coronavirus In A Big Way April 15, 2020 Major League Baseball plans to test up to 10,000 players, employees and their families to detect COVID-19 antibodies. The hope is to see how prevalent the infection rate is in the general population.