Guerra has made five spring starts and is scheduled to pitch Sunday's Cactus League finale against the Chicago White Sox. The 33-year-old right-hander, who had a groin injury in the opener at Cincinnati last year, was hampered all season and finished with a 5.12 ERA in 70 1/3 innings. He has a 3.15 ERA in 20 spring innings.
Manager Craig Counsell said pitcher Yovani Gallardo also has been told he will not make the team. Gallardo, 32, came up with Milwaukee in 2007 and spent eight years with the Brewers, starting the 2014 opener. He was 5-10 with a 5.72 ERA for the Seattle Mariners last year.
Counsell said Jhoulys Chacin and lefty Brent Suter will start the final two games of the opening series in San Diego. The fifth starter will be Brandon Woodruff, but he will work out of the bullpen in San Diego, Counsell said.
Counsell said Woodruff will start in the home series against the Chicago Cubs, who follow the Cardinals to Miller Park.