Fantasy Baseball Trade Deadline Tracker: Ryan McMahon says goodbye to Coors Field; Mariners land Josh Naylor

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The trade deadline may be Thursday at 6 p.m. ET, but the deals are already coming in. And while we’re likely to see some team set itself on a course for a championship while several others fundamentally alter their long-term trajectory, chances are you’re mostly concerned with how the deals affect you. Typical.

Fortunately, there’s the Trade Deadline Tracker to cater to your self centeredness. Here, you’ll find quick hitting analysis from Chris Towers and myself (Scott White) for all the moves that matter to Fantasy Baseball. Be sure to bookmark this page and circle back as the moves come pouring in. It could be a wild ride.

McMahon has been less a stud in Fantasy than a steady presence, consistently delivering 20 to 25 home runs with a not so terrible batting average. The batting average has been closer to terrible this year, which only raises concerns over how a player with his already fringe profile can survive away from the most hitter friendly ballpark in baseball. After all, McMahon is a career .264 hitter with an .820 OPS at Coors Field vs. .216 and .664 everywhere else. Granted, projecting hitters who leave Colorado is never as simple as extrapolating their road starts. When they’re accustomed to seeing the ball move a certain way in a thin air environment, a temporary displacement from that environment (like a road trip) is particularly jarring, but a more permanent displacement brings about a more permanent adjustment.

So that’s the hope for McMahon as he goes to the Yankees, who, of course, have one of the most homer friendly venues for lefties, but there’s another problem. His swing isn’t geared to take advantage of the short porch in right field, as demonstrated by the poor pulled air rates throughout his career. Statcast suggests that if he had played every game at Yankee Stadium, he’d have hit 28 fewer home runs in his career. To make matters worse, the Yankees acquired Amed Rosario a day after acquiring McMahon, and there’s some speculation that the two could platoon moving forward. All in all, there are just too many negatives here for me to think McMahon will remain viable in standard size leagues. –Scott White

Naylor hadn’t missed a beat with his move from Cleveland to Arizona in the offseason. Sure, he was on pace for about 20 homers rather than the 31 he hit in 2024, but with an additional 50 points in batting average. His game has always required a certain amount of tradeoff between those two numbers. You might worry that a move to Seattle crushes his Fantasy value since T-Mobile Park has a reputation for suppressing home runs, but Chase Field rates similarly in that regard. Naylor obviously made the necessary adjustment to that venue, actually hitting better there (.324 batting average and .855 OPS) than on the road.

T-Mobile Park has its own unique complications, though. Some of the hitters who have passed through have complained about the batter’s eye, and there’s no telling until we see him there whether Naylor will be afflicted by that. I would have rather him stayed in Arizona, where he had a better supporting cast and some history of success already, and the added uncertainty is enough for me to drop him behind Cody Bellinger in my rest of season rankings (it was already a close call). The most likely scenario, though, is that Naylor continues to perform about the same as he already was. –Scott White

This news was originally published on this post .