Phillies

Phillies Acquire Luis Arraez in Multi-Player Trade with Giants

By Luke Arcaini

Published: Aug 3rd, 2026 · 10:09 AM EDT

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The Phillies have acquired three-time batting champion Luis Arraez and reliever Caleb Kilian from the San Francisco Giants, according to ESPN’s Jeff Passan, USA Today’s Bob Nightengale, and The Athletic’s Jayson Stark:

The complete Phillies-Giants deal:

Phillies get Luis Arraez and reliever Kaleb Killian

Giants get pitching prospects Ramon Marquez and Marty Gair@passan and @nightengalejr were on it

— Jayson Stark (@jaysonst) August 3, 2026

Arraez, 29, currently leads the National League in batting average at .324, and holds a .360 on-base percentage. It was a simple ask for the Phillies at this deadline; they needed guys that get on base. Arraez is arguably the best in baseball at doing that. He does not strike out.

While there is no power threat with Arraez, he’ll immediately slot into the Top 5 of the Phillies lineup as a slap-hitting contact threat, who is also playing an elite second base this year. The Phillies will need to make an infield adjustment, as the assumption is that Arraez will slot in at Bryson Stott’s 2nd base position. The team could look to move somebody to the outfield. Bryce Harper has said he’s willing to go back to the outfield for the right move, but that would probably shift Alec Bohm to first base. Or, the Phillies could look to move Bohm’s expiring contract before 6 PM today, and move Stott to third base.

Kilian is another right-handed reliever to add to the Phillies bullpen, carrying a 4.26 ERA this season, but a 3.96 ERA away from Oracle Park. Kilian has limited left-handed batters to a .542 OPS this season, and has not allowed a home run to a lefty all year. Righties are hitting .232 off of him with an .801 OPS.

Ramon Marquez, arguably the most intriguing pitching prospect in the entire Phillies organization, is going back to the Giants in the deal, along with Marty Gair. Dealing Marquez in this package isn’t something I necessarily love, but you have to give to get. Right off the bat, it feels like the Phillies gave up a lot.