Brewers’ starter Junior Guerra is heading to the disabled list with a strained right calf suffered in Milwaukee’s 7-5 home loss to Colorado on Opening Day. Guerra was hurt in the third inning while running to first base on a sacrifice bunt, and manager Craig Counsell says an M-R-I today (Tuesday) will show the extent of the injury. The Rockies were up 4-0 when the Brewers scored all five of their runs in the fifth to take the lead — but Colorado scored twice in the seventh to go in front for good, with the decisive run coming as Brewers’ catcher Jett Bandy threw to an uncovered second base on an attempted steal. Former Brewer Mark Reynolds hit the only homer of the game, and Travis Shaw doubled twice for the Crew as Carlos Estevez got the win and Jhan Marinez took the loss. Game Two of their series is tonight (Tuesday) at Miller Park.