What happened: The Chicago Cubs claimed infielder Gabriel Arias off waivers from the New York Mets. In a corresponding transaction, the Cubs transferred right-handed pitcher Phil Maton to the 60-day injured list.

Why it matters: The waiver claim provides Chicago with additional infield depth for the final weeks of the season. Maton's transfer to the 60-day injured list creates the necessary 40-man roster space to accommodate Arias.

What to watch: Arias will report to his new assignment within the Cubs organization.