Nolan Arenado hit a first-inning grand slam, Zack Littell won his Arizona debut, and the Diamondbacks blanked the Colorado Rockies 9-0 in Phoenix on Monday. Littell, who signed earlier Monday after being released by the Washington Nationals on Friday, struck out two and walked two. Troy Johnston had two of the Rockies’ five hits. Arenado has hit six of his 371 career homers against the Rockies since leaving Colorado ahead of the 2021 season. The latest slam was the eighth of Arenado’s careerSoroka gave up three hits, walked three and struck out four in 4 1/3 scoreless innings before leaving when his pitch count reached 77.