CINCINNATI -- Cubs first baseman Anthony Rizzo left Tuesday's 3-0 victory over the Reds in the eighth inning with lower back tightness.
"He's ready to go again," manager Rick Renteria said after the game. "I did it more as a precaution. There was no need to push Rizz. I certainly expect [him to be back in the lineup on Wednesday] unless something else comes up."
Rizzo went 1-for-4 with a home run, his 30th of the season. He is the seventh left-handed batter in Cubs history to hit at least 30 homers in a season. The last to do so was Fred McGriff, who hit 30 in 2002.
"It's great, especially in this organization with a lot of history, a lot of great players," he said of his homer. "But the season's not over, you've just gotta keep going and keep playing."
Chris Valaika replaced Rizzo at first base.
Carrie Muskat is a reporter for MLB.com. She writes a blog, Muskat Ramblings, and you can follow her on Twitter @CarrieMuskat. Manny Randhawa is an associate reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.