The Nationals outrighted Hassell to Triple-A Rochester after he cleared waivers Sunday.
The former top prospect was designated for assignment by Washington last weekend but will remain in the organization after passing through waivers unclaimed. Hassell received his first taste of the majors in 2025 and posted a .572 OPS and 30.1 percent strikeout rate in 70 games, and he performed similarly at Rochester this season with a .216/.307/.291 slash line across 258 plate appearances.