A Boston Red Sox trade idea lands Arizona Diamondbacks slugging first baseman Josh Naylor after Rafael Devers refused to take over first base duties.

Josh Naylor delivered a walk-off grand slam for his Arizona Diamondbacks on Monday night, but you wouldn’t know it based on his reaction in a postgame interview.

Josh Naylor hit a walk-off grand slam to lift his team but drew criticism from Justin Verlander’s brother for his “lazy” home run trot.

Arizona Diamondbacks' Josh Naylor discusses the moment he hit his walk-off grand slam to beat the Seattle Mariners on June 9, 2025.

With one big swing, Diamondbacks first baseman Josh Naylor saved the day for Arizona, which defeated the Mariners on Monday night.

Josh Naylor hit a game-ending grand slam in the 11th inning and the Arizona Diamondbacks beat the Seattle Mariners 8-4 after losing closer Justin Martinez with two outs in the ninth and then blowing a four-run lead.

If the Seattle Mariners are going to add to their offense at the trade deadline, first base is a logical position to upgrade at. And according to Ken Rosenthal

With the Seattle Mariners struggling to stay afloat in the AL West, the front office may look to boost their lineup at first base ahead of the 2025 MLB Trade Deadline.