Buster's Buzz: Biggest contender holes after run of major trades

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Agents and executives have noted a trend -- a concerning trend, for the veteran players -- that will soon manifest for the middle class of the free-agent market: Teams are filling some of their big needs through trades.

The St. Louis Cardinals just landed Paul Goldschmidt to play first base in a deal with the Arizona Diamondbacks. The New York Yankees filled their primary rotation hole by trading for the Mariners' James Paxton. The New York Mets traded for Robinson Cano to anchor their infield, and for Edwin Diaz to be their closer. The Philadelphia Phillies snagged Jean Segura to play shortstop or second base. The Chicago White Sox upgraded their bullpen by dealing for Alex Colome. The Washington Nationals filled their catching spot by trading for the Indians' Yan Gomes.

Patrick Corbin killed it in free agency with his six-year deal. Nathan Eovaldi appears poised to get a big deal, and Manny Machado and Bryce Harper will do really, really well. But there are close to 200 free agents right now, a group increased in volume last week through the contract tender decisions by clubs, and inevitably, a bunch of players are going to get left behind, scrambling for dollars or even jobs, in the way that Mark Reynolds and Matt Holliday did last winter.

And unless there is a significant adjustment negotiated soon, this ensures that the same problem could exist or grow next winter, after so many players have to take one-year offers this year and go back into the market next fall. An ugly situation is getting worse.

But it's still relatively early in the offseason, and contenders are working right now to improve their rosters for next year. The biggest holes yet to be filled by contenders:

1. Phillies: middle-of-the-order bat. Does that mean Harper? Does that mean Machado? Or both? The Phillies already have been aggressive this offseason, and there's more to come.