Walters underwent a right elbow UCL repair with an internal brace Wednesday, Tim Stebbins of MLB.com reports.
Lowe went 1-for-4 with a two-run home run during the Guardians' 9-5 loss to the Orioles on Wednesday.
Griffin (15-5) took the loss against the Orioles on Wednesday, allowing eight runs on seven hits and two walks while striking out four across 2.1 innings.
DeLauter went 2-for-5 with a two-run home run during the Guardians' 9-5 loss to the Orioles on Wednesday.
Suarez is not in the Reds' starting lineup against the Dodgers on Wednesday.
McLain is not in the Reds' starting lineup against the Dodgers on Wednesday.
DeLauter (wrist) will start in right field and bat second in Wednesday's game against the Orioles.
Bibee didn't factor into the decision in Tuesday's 9-5 win over the Orioles, coughing up five runs on six hits and a walk over 4.1 innings. He struck out one.
Martinez started in right field and went 2-for-5 with a triple and two runs scored in Tuesday's 9-5 win over Baltimore.
Bazzana went 1-for-3 with a walk and a three-run home run in Tuesday's 9-5 win over the Orioles.
