Arizona Diamondbacks insider Jack Sommers believes that the team's biggest roster hole isn't a splashy name. Sommers points to the Diamondbacks' struggles against right-handed pitching, suggesting a need for a reliable left-handed bat.

After a few months away from the Diamondbacks, Merrill Kelly will return to the team in 2026. Kelly will reportedly rejoin the team on a two-year deal after a strong run in Arizona and an uneven one with the Texas Rangers.

While the Arizona Diamondbacks have been busy signing free-agent pitchers, they just let one go who was once a huge prospect.

The Diamondbacks signed Campbell to a minor-league contract Dec. 5. In parts of three seasons in the majors, Campbell has collected a 5.65 ERA and 42:16 K:BB over 43 innings of work. The 28-year-old reliever will give the Diamondbacks some experienced bullpen depth at Triple-A Reno.

While Lowe has had his name mentioned a lot, he isn't the only veteran on the team who makes sense as a trade candidate. Kiley McDaniel and Jeff Passan recently wrote about Rays slugger Yandy Diaz as a potential fit for the Arizona Diamondbacks in a trade this winter.