Alex Gordon agrees to four-year deal with Kansas City Royals

The defending champion Kansas City Royals moved Wednesday to retain a piece of their title-winning core, signing left fielder Alex Gordon to a four-year deal worth $72 million.

Gordon, 32, has spent his entire career with the Kansas City organization after being drafted No. 2 overall in 2005. Since his breakout campaign in 2011, he's posted a .281/.359/.450 slash line, won four Gold Gloves and been credited with 94 defensive runs saved -- second most among major league outfielders (Jason Heyward) during that time.

The White Sox reportedly were interested in Gordon, but according to a tweet from Ken Rosenthal, the South Siders were not willing to give Gordon a fourth year on a contract.

It's unclear at this point whether Gordon was the Sox's "Plan A" in the outfield, or if he was a "Plan B" option. The team has been linked to free agent outfielder Yoenis Cespedes. It remains to be seen whether the Sox would be willing to give Cespedes, who is two years younger than Gordon, a four- or five-year deal.

As for the Royals, this move solidifies their status as favorites to defend their World Series title in 2016. Kansas City had four key free agents going into this offseason -- Gordon, Johnny Cueto, Ben Zobrist and Ryan Madson. The Royals retained only one of the four, but they kept the most important one in Gordon.

Kansas City has already replaced Madson with the earlier signing of Joakim Soria, and while Cueto and Zobrist are key losses, people have to remember those guys were nothing more than midseason acquisitions in 2015. The Royals were in first place and had the best record in the league long before they traded for Cueto and Zobrist. Those two were never core members of the team. Gordon was and is a key piece to their puzzle.

With Gordon making $18 million a year, it will be harder for the Royals to keep long-term other key players such as Eric Hosmer, Mike Moustakas, Lorenzo Cain and Wade Davis, all four of whom will hit free agency after the 2017 season.

But that's a problem for two years from now. With this move, the Royals are acting to keep their core together for as long as possible, and there is every reason to believe they will continue to be in the championship discussion for the next two years.

That's an issue for the White Sox and the rest of the AL Central.