The Arizona Diamondbacks have been an active team at the MLB trade deadline, and Merrill Kelly or Zac Gallen could be the next to leave.

The Arizona Diamondbacks battle the Pittsburgh Pirates in the final game of their 3-game series Sunday afternoon at PNC Park.

The club continued what is expected to be a considerable sell-off at the MLB trade deadline by sending outfielder Randal Grichuk to the Kansas City Royals, according to MLB.com's Steve Gilbert. Reportedly going back to the D-backs is relief prospect Andrew Hoffman.

The Kansas City Royals acquired outfielder Randal Grichuk in a trade with the Arizona Diamondbacks on Saturday, according to ESPN's Jeff Passan.

As part of the deal, the Royals sent minor league reliever Andrew Hoffman to the Diamondbacks. Why this trade could be a risk is Hoffman is an arm that could turn into a decent reliever in MLB. This season, Hoffman has a 2.25 ERA with a 1.13 WHIP. He also has 55 strikeouts and two saves.

NYC Council Minority Leader Joann Ariola’s nephew Joe was selected by the Arizona Diamondbacks in the Major League Baseball Draft last week — and the longtime Mets fan is already switching her allegiances.

The Royals have spent weeks scouring the trade market for an outfield bat to add to their starting lineup. On Saturday, several days ahead of the Major League Baseball trade deadline, they found their guy: The Royals acquired Randal Grichuk from the Arizona Diamondbacks in exchange for a young relief pitcher.

Nik McClaughry continues to work his way through the minor leagues of professional baseball after a successful three-year collegiate career at Arizona.  McClaug