Chaparro went 1-for-1 with a solo home run in Tuesday's 5-4 loss to the Padres.
Cornelio struck out four over three perfect innings in a no-decision versus the Padres on Tuesday.
Morales went 1-for-4 with a solo home run in Tuesday's 5-4 win over the Nationals.
Bachar will start Wednesday's game against the White Sox, Dominic Campbell of SI.com reports.
MRI results on Ribalta's right forearm came back negative Tuesday, Kyle Williams of TheBanner.com reports.
The Pirates placed Mattson on the 15-day injured list Tuesday with hip inflammation, retroactive to Sunday.
Nunez isn't in the lineup for Tuesday's game against the Padres, Mark Zuckerman of NatsJournal.com reports.
Ruiz isn't in the lineup for Tuesday's game against the Padres, Mark Zuckerman of NatsJournal.com reports.
Young isn't in the lineup for Tuesday's game against San Diego, Mark Zuckerman of NatsJournal.com reports.
The Nationals placed Waldron on the 15-day injured list Tuesday with chest inflammation, retroactive to Saturday.
The Pirates are probably glad they didn't trade Mitch Keller, as the 30-year-old is off to a dominant start. With increased use of a changeup, Keller sports a 1.00 ERA and 0.94 WHIP. Pittsburgh should have success against struggling Miles Mikolas (12.41 ERA) and an already-depleted Washington bullpen. Back the Pirates, who are 9-3 in their last 12 games, on the run line.
Miles Mikolas is 0-3 with a 12.41 ERA in three starts, and he’s backed by the worst bullpen in baseball. The Pirates put 16 runs up vs. the Nats last night. They shouldn’t need that many here. Mitch Keller has given up just two runs over 18 innings.
He may not be the Pirates' ace (or anywhere close to it), but Mitch Keller is off to a flying start in 2026. Three starts, six innings each, and only two total runs given up. Since the beginning of last season, Keller is 13-6 to the over 16.5 outs when pitching at home. While the Nationals roster has a collective .321 average against Keller, I believe the Pirates starter continues his excellent start to 2026 and pitches at least six innings tonight.
