WEST SACRAMENTO, Calif. — Christian Walker homered, doubled and drove in two runs as the Houston Astros routed the Athletics 11-0 on Saturday.Walker finished 3 for 5 with three runs scored, while Joey Loperfido, Yainer Diaz and Christian Vázquez each added three hits as Houston matched a season high with 11 runs.Tatsuya Imai (1-0) struck out nine over 5 2/3 scoreless innings while allowing three hits and three walks for Houston.The Astros struck first in the opening inning. Jeremy Peña doubled and scored when José Altuve lined an RBI single to center. Walker followed later in the inning with an RBI single that brought home Yordan Alvarez for a 2-0 lead.Walker extended the advantage in the third with a solo homer to left-center, his first of the season. The Astros added another run later in the inning when Vázquez doubled to left field, scoring Jake Meyers to make it 4-0.Joey Loperfido hit a ground-rule double down the left-field line that scored Carlos Correa, and Diaz had a two-RBI single to stretch the Astros lead to 7-0 in the fourth.Peña opened the fifth inning with a line drive up the middle for the 600th hit of his career.Loperfido added an RBI single in the sixth before Vázquez delivered his second RBI double of the game. Alvar …
