HOUSTON (AP) — The Houston Astros and Oakland Athletics jointly walked off the field following a moment of silence, draping a Black Lives Matter T-shirt across home plate as they chose not to play. The decision came on Jackie Robinson Day across the majors, and in the wake of 29-year-old Jacob Blake, a Black man, being shot by police in Wisconsin over the weekend. All players, managers and coaches at Minute Maid Park were wearing No. 42, the jersey number Robinson wore when he broke the major league color barrier in 1947. There have been 11 big league games postponed this week as clubs joined teams in the NBA, WNBA and MLS in calling off games while protesting social injustice.