WHOA: Cubs Strike Again, Signing Second Baseman Nico Hoerner to 6-Year Deal

You can safely get used to this Cubs core. It's going to be here a while. The team agreed to a six-year extension with (formerly) impending free agent Nico Hoerner Thursday, according to multiple reports. Jesse Rogers of ESPN was first with the news, on Twitter.

Hoerner, 28, was due to become a free agent at the end of this season, at the conclusion of the three-year extension to which he and the Cubs agreed almost exactly three years ago. Instead, he'll stick around through at least 2031, locking in a fourth member of the team's positional core for the medium term.

Unlike the deal Chicago agreed to with Pete Crow-Armstrong earlier this week, this one is a major surprise, and a game-changer for the team's future. Hoerner was much closer to free agency, and his possible departure made it easy to see how a number of players' futures with the organization might go. Dansby Swanson could have moved to second base as soon as 2027. Jefferson Rojas, the team's burgeoning shortstop prospect, could have taken over at short. Alternatively, Matt Shaw could have taken over for Hoerner next year, since he's been displaced from third base by the arrival of Alex Bregman. Now, none of that is in play.

Swanson's contract runs through 2029, as he heads into his mid-30s. Hoerner, Swanson, Bregman and Michael Busch are overwhelmingly likely to make up the team's infield for the next four seasons, which could get the trio of Swanson, Hoerner and Busch close to 1,000 games together before Swanson or Busch hits free agency. Meanwhile, the pathway to playing time for Rojas and Shaw just got murkier, and the likelihood of a similar extension for Ian Happ or Seiya Suzuki plunged toward zero.

Hoerner is, by every account, a great fit in the clubhouse and an asset in the community. He plays with energy and smarts, and became the best version of himself last year, providing hope that he might be entering his prime as a perennial All-Star-caliber second baseman. This extension introduces some tough questions, since there will be defensive degradation to consider and the team needs ways to develop and install new blood, but it's an exhilarating moment, too. Hoerner, Busch, Swanson, Bregman, and Crow-Armstrong will be the spine of this team for the majority of a decade, by the time they're done playing together. Moisés Ballesteros could end up being a sixth in that collection of talent, and Cade Horton, Edward Cabrera and Daniel Palencia offer a pitching-side reflection of that abundance. Suddenly, the Cubs' future is much more clear, and even if there are some reasons to be wary of locking them all in, there is also much reason to celebrate. From a fan's perspective, keeping a group with such a history of and dedication to winning together for such a long time augurs well for the organization.