On Thursday, Johnson used right-hander Jordan Zimmermann in relief in a 2-1 victory over the Cardinals in Game 4 because the bullpen was overworked and Johnson wanted to bridge the gap in order to get to setup man Tyler Clippard and closer Drew Storen. Zimmermann pitched in the seventh inning and struck out the side.
On Friday, Johnson said the entire bullpen would be available against St. Louis.
"On Thursday, with my bullpen kind of overused the day before, I really needed somebody for that seventh inning," Johnson said. "I didn't want to go to some of the guys out there, certainly Christian Garcia, I didn't want to go to. Ryan Mattheus had been working through a lot of pitches, and the same with Craig Stammen. So I really needed Zimmermann for that one inning.
"Jackson, on the other hand, he threw 68 pitches in his last start. This would be his throw day for [a potential NL Championship Series Game 2] start on Monday. I would not use him [as the] bridge to get to Clip and Storen."