Overview

• The Arizona Diamondbacks, currently on a five-game losing streak, host the Pittsburgh Pirates in the opener of a three-game series at Chase Field in Phoenix.
• Ryne Nelson will make his third start of the season for Arizona, while Pittsburgh counters with Andrew Heaney, who has a 2.91 ERA this year.
• The Diamondbacks have lost their last five games by a combined six runs, including three one-run losses during a sweep in St. Louis over the weekend.
• Pittsburgh, under interim manager Don Kelly, has won four of its past six games, marking its best stretch of the season so far.
• Key players include Arizona’s Corbin Carroll, who leads the team with 15 home runs, and Pittsburgh’s Oneil Cruz, who has 11 home runs and three in his last three games.