Trade season is getting off to a hot start a week before the Deadline, with the D-backs dealing slugger Josh Naylor to the Mariners, sources told MLB.com on Thursday night.

Josh Naylor just set a Seattle Mariners stolen base record.

But for the top 10 players on this list, it legitimately would be a surprise if they're still on the same team on August 1.

The Major League Baseball trade deadline is 6 p.m. ET this coming Thursday, July 31, and the action is beginning to pick up.

Most teams — 17 of them — fell into one of the obvious extremes, either buying or selling.