The Mariners activate Josh Naylor on July 29, 2025, boosting their lineup. With Cal Raleigh chasing records, Seattle explores more trades before the deadline.
StatPro MLB Beat Reporter
The Seattle Mariners have officially kicked their trade deadline activity into high gear, activating newly acquired first baseman Josh Naylor just in time for their series against the Oakland Athletics. The move, part of a flurry of activity and rumors, signals a clear intent from the front office to make a significant push for the postseason as the deadline clock ticks down.
Catcher Cal Raleigh enters the day with 41 home runs and 87 RBI, putting him on a historic pace to challenge the Mariners' single-season home run record.
Josh Naylor is officially a Seattle Mariner. Acquired from the Arizona Diamondbacks, the power-hitting first baseman was activated on Tuesday and immediately inserted into the cleanup spot. Naylor brings a potent bat, hitting .292 with an .807 OPS, 11 homers, and 59 RBI this season. His arrival provides a much-needed boost to the middle of the order. To make room on the roster, utility man Miles Mastrobuoni was optioned to Triple-A Tacoma, while prospects Brandyn Garcia and Ashton Izzi were sent to Arizona to complete the trade.
With one move made, more appear to be on the horizon. Reports indicate the Mariners are making Gold Glove utility infielder Dylan Moore available in trade talks. While valued for his defensive prowess, Moore's offensive struggles (.201/.264/.374) have made him expendable as the team seeks upgrades. The most exciting rumor involves a potential reunion with 2025 All-Star third baseman Eugenio Suarez, who would add another significant power threat to the lineup. The front office is clearly working the phones hard to add both another impact bat and bullpen reinforcements.
Amidst the trade deadline chaos, catcher Cal Raleigh continues his assault on the Mariners' record books. With 41 home runs and 87 RBI already, 'Big Dumper' is on a torrid pace that puts the franchise's single-season home run record squarely in his sights. His consistent power has been the bedrock of the Mariners' offense all season, and his chase provides a thrilling storyline for fans to follow every single night.
All the roster shuffling leads to tonight's crucial matchup at the Oakland Coliseum. The 56-50 Mariners, sitting second in the AL West, will send Logan Evans (4-3, 3.64 ERA) to the mound. He'll face off against the Athletics' Luis Severino (4-11, 4.96 ERA). With a new cleanup hitter and the team's ambitions clearly stated, this game is the first opportunity to see how the re-tooled Mariners perform as they fight to keep pace in the division race.
The Mariners' front office has drawn a line in the sand: they are all-in on a 2025 playoff run. The arrival of Josh Naylor is the first major salvo, but with the trade deadline looming, the next 48 hours could see even more dramatic changes. Tonight's game against the A's is the first test for this new-look roster, as Seattle aims to prove its deadline aggression will translate into crucial wins.
