Springer, a highly touted prospect and first-round draft pick, singled and walked in his major league debut in Houston's 6-4 loss to Kansas City in 11 innings. Mike Moustakas homered in the 11th inning to lift the Royals to the victory. Moustakas has been off to a tough start this season and was hitting .098 before his solo shot to the seats in right field off Jerome Williams (0-1) to lead off the 11th.