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- San Francisco traded All‑Star second baseman Luis Arraez to the Philadelphia Phillies.
- The Giants sent Arraez and Caleb Kilian to Philadelphia for two Minor League pitchers.
- Ramon Marquez became the Giants’ No. 7 overall prospect after strong Single‑A results.
The San Francisco Giants kicked off what is expected to be a busy sell-off Monday, dealing All-Star second baseman Luis Arraez to the Philadelphia Phillies hours before the 3 p.m. Pacific trade deadline.
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Alongside Arraez, a three-time batting champion, the Giants traded reliever Caleb Kilian to Philadelphia in exchange for the Phillies’ No. 4 prospect right-hander Ramon Marquez and Minor League reliever Marty Gair, the team confirmed Monday on social media.
Arraez, who will become a free agent at the end of the season, led the National League with a .326 batting average, owned Major League Baseball’s lowest strikeout rate at 4.5% and made his fourth All-Star appearance earlier this season. The 29-year-old also improved defensively at second base during his lone season with the Giants, increasing his trade value.
Over the All-Star break, Arraez told reporters he wanted to continue playing second base if he was traded, and reports indicate he will do so with the Phillies. Arraez was reportedly offered multi-year contracts over the offseason but signed with the Giants to remain at second base.
“I just try to do my job during the game,” Arraez said when asked about the trade speculation Sunday, according to MLB.com. “I just go out there and compete. I don’t want to think about the Trade Deadline or anything. If San Francisco trades me, I’ll go and do my job. I don’t want to think about that.”
The trade was the latest move for the 47-65 Giants, who are expected to make additional deals before the deadline as they sit 12 games out of a playoff spot.
On Sunday, the Giants traded starter Tyler Mahle to the Atlanta Braves for reliever Anthony Molina, who was immediately optioned to the Triple-A Sacramento River Cats.
Former Cy Young Award winner Robbie Ray, who has posted a 3.08 ERA this season, was also expected to be dealt before the deadline. USA Today’s Bob Nightengale reported on X that the Phillies were also interested in acquiring Ray, 34, who is also on an expiring contract.
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Who did the Giants get?
Trading arguably their best player in Arraez, along with Kilian, who recorded eight saves and a 4.26 ERA in 45 appearances during an inconsistent stint as closer, the Giants received a pair of intriguing pitching prospects.
The 6-foot-2 Marquez, 20, immediately slotted in as the Giants’ No. 7 overall prospect and top pitching prospect, according to MLB Pipeline.
After signing with the Phillies for a $10,000 bonus during the 2025 International Signing Period, Marquez quickly climbed the prospect rankings with a dominant season in Single-A.
Between Single-A and High-A, Marquez went 6-1 with a 1.68 ERA and 93 strikeouts in 59 innings. He started 11 games and made one appearance out of the bullpen.
While likely still several years from the majors, Marquez’s three-pitch arsenal, highlighted by a highly regarded changeup, along with his frame and production, make him a promising addition to the Giants’ farm system.
Gair, 22, pitched for the same Single-A affiliates as Marquez this season. Although he posted a 4.50 ERA, he showed swing-and-miss potential with 66 strikeouts in 36 innings.
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