Astros pitcher Dallas Keuchel is going back on the disabled list with neck discomfort and returned to Houston on Thursday to be examined. Keuchel was scratched from Wednesday’s start against the Kansas City Royals with what the Astros initially said was an illness. Orioles third baseman Manny Machado was out of the lineup for Thursday’s game against Washington and was diagnosed with a strained wrist. The team announced that Machado left Wednesday’s walk-off win over the Pirates at Camden Yards with left wrist soreness after center fielder Andrew McCutchen spiked Machado’s lower arm on a slide into third base in the second inning.