J.J. Putz (elbow) has been playing catch from 90 feet and doing strengthening exercises, Diamondbacks manager Kirk Gibson said Saturday.
Aroldis Chapman earned his 12th save of the season Saturday in the Reds' 5-2 defeat of the Cubs.
Travis Wood surrendered five earned runs in 5 2/3 innings Saturday as the Cubs fell to the Reds.
Tyler Flowers was scratched from the White Sox lineup on Saturday due to back spasms.
Brewers placed RHP Jim Henderson on the 15-day disabled list with a strained right hamstring.
Pedro Alvarez hit two home runs and drove in three in the Pirates' 5-2 win over the Brewers on Saturday.
Carlos Gomez went 2-for-3 with two solo home runs but the Brewers lost to the Pirates on Saturday.
Jeff Locke threw six scoreless innings to pick up his fifth win of the season Saturday as the Pirates beat the Brewers.