Josh Naylor is headed to Seattle after the Mariners acquired the slugging first baseman from the Arizona Diamondbacks on Thursday night. The deal could mark the first major domino to fall ahead of the 2025 MLB Trade Deadline, which is set for July 31 at 6 p.m. ET. So, what did the Diamondbacks get in return for Naylor? Let’s break down the full trade details.
The Arizona Diamondbacks received two prospects for Josh Naylor:
Relief Pitcher Brandyn Garcia
Garcia was ranked as the No. 13 prospect in the Mariners’ system at the time of Thursday’s trade. Despite being selected in the 11th round, he quickly ascended through the minors and made two appearances at the major league level this season. Over two innings, Garcia allowed two runs (one earned) on four hits, with three walks and one strikeout. While the sample size is extremely limited, it doesn’t accurately reflect his performance in the minors.
Garcia consistently averaged more than a strikeout per inning across multiple minor league levels and never posted an ERA higher than 3.96. He features a sinker, sweeper, and slider. Depending on how the Diamondbacks choose to deploy him, Garcia could contribute as an effective reliever right away.
Starting Pitcher Ashton Izzi
There’s not much to evaluate about Izzi at this stage, as the 21-year-old fourth-round pick hasn’t pitched above the High-A level. His standout season came in 2024, when he logged 110.2 innings with a 2.85 ERA, 4.56 FIP, 7.7 K/9, and 4.8 BB/9. He entered 2025 ranked as the No. 16 prospect in the Mariners’ system but has struggled so far this season. Through 47.1 innings, he owns a 5.51 ERA and a 4.93 FIP, with an improved 10.2 K/9 and a slightly better 3.9 BB/9. The Diamondbacks will be hoping to get him back on track and closer to his promising 2024 form.
Will the Diamondbacks trade more players before the MLB Trade Deadline?
According to Francys Romero, the Diamondbacks are expected to trade 5 to 6 more players before the deadline. This could shape up to be a huge trade deadline before all is said and done.
Check out more MLB content from DraftKings Network.
