What happened: The Pittsburgh Pirates visit the Washington Nationals at 1 p.m. ET Sunday, with national coverage on Peacock. The series is tied 1-1 entering the scheduled game.

Why it matters: Washington enters at 46-44, one game ahead of 45-45 Pittsburgh. The matchup gives both clubs an opportunity to build momentum before the All-Star break.

What to watch: Watch whether Washington's offense or Pittsburgh's stronger run prevention sets the pace.