Sports ‘Starting to hit home:’ Percentage of Black players in MLB still low, but there are signs of growth August 14, 2020 Bob Nightengale, USA TODAY Comments Off on ‘Starting to hit home:’ Percentage of Black players in MLB still low, but there are signs of growth The Black population in MLB is nearly 8%, with the Seattle Mariners having the most Black players on their team (10) in USA TODAY'S annual study.