The first Diamondbacks trade domino has fallen, as first baseman Josh Naylor is heading to the Seattle Mariners.

The Arizona Diamondbacks have already made one big trade this year, but they could continue selling as aggressively as any team in baseball.

MLB trade deadline action officially kicked off when the Seattle Mariners acquired first baseman Josh Naylor from the Arizona Diamondbacks on Thursday.

Perhaps the biggest question concerning Major League Baseball's upcoming trade deadline, slated for July 31, was whether or not the Arizona Diamondbacks would sell. The D-backs sit 5 ½ games of a wild-card spot,

If the Milwaukee Brewers are going to swing big at the trade deadline, Arizona Diamondbacks third baseman Eugenio Suárez is the obvious choice. Suárez might not

The New York Yankees need a third baseman and have until Thursday to make a trade. Could the Kansas City Royals provide them with an All-Star?

Third baseman Eugenio Suarez is drawing the most attention as a trade chip for the Arizona Diamondbacks. Likewise, the Diamondbacks are reportedly willing to trade players on expiring contracts, such as pitchers Zac Gallen and Merrill Kelly.

This article was originally published on www.si.com/mlb/tigers as Tigers Land Two Major Upgrades From Diamondbacks in This Trade Idea. It has been a disastrous stretch for the Detroit Tigers, who have lost 10 of their last 11 games.