r2d2 calling balls and strikes
https://ca.sports.yahoo.com/news/mlb-plans-to-test-robotump-technology-in-spring-training-games-182035486.html?src=rss
https://ca.sports.yahoo.com/news/mlb-plans-to-test-robotump-technology-in-spring-training-games-182035486.html?src=rss