Nationals Call Up Luis Perales for MLB Debut, Option Jake Bird
Washington promotes 23-year-old righty Luis Perales from Triple-A as the team enters evaluation mode for the final month of the season.

The Nationals have recalled right-hander Luis Perales from Triple-A Rochester, marking his first big league promotion. To make room on the active roster, Washington optioned righty Jake Bird following a loss to Colorado. Perales was already on the 40-man roster, so no additional moves were required. The 23-year-old Venezuelan native posted a 3.64 ERA over 96.1 innings at Rochester this season, featuring a 98.5 mph fastball but persistent control issues with a walk rate above 13%.
More on the Nationals wire.

CJ Abrams Out Four Games, per Washington Nationals
The Nationals announced Abrams will miss four games; he had sprained his ankle on a slide into second base and was listed day-to-day.

Nationals Send Rookie Foster Griffin to Cleveland at Deadline
Washington dealt All-Star rookie pitcher Foster Griffin to the Guardians, moving him from the NL to the AL mid-season.

CJ Abrams Back in Nationals Lineup as DH After Four-Game Absence
Abrams returns from a sprained ankle but is slotted at DH rather than shortstop, per Mark Zuckerman, suggesting he isn't fully cleared yet.

Nationals Playing Shorthanded This Weekend
Beat reporter Craig Mish notes Washington is severely undermanned, pointing to meaningful roster or availability issues for the Nats.

Nationals Claim RHP Matt Waldron Off Waivers from Blue Jays
Washington adds a knuckleball-leaning right-hander to its roster after claiming him from Toronto.

Nationals Claim Knuckleballer Matt Waldron Off Waivers From Toronto
Washington adds a rotation/bullpen arm in Matt Waldron, who was DFA'd by Toronto after four appearances following an earlier claim from San Diego.
