San Francisco Giants Logan Webb (Image via USA TODAY Sports) The San Francisco Giants are a reasonable landing spot for Sandy Alcantara based on how their rotation is set up. Logan Webb leads the group, but the rest of the staff does not offer the same level of certainty compared to other National League contenders.The Miami Marlins are also in a position where a move can be considered. Alcantara is still on the roster, but the team appears focused on younger and more affordable players. That makes a deal possible if the right offer comes in.
Why this deal makes sense for both teams
The San Francisco Giants have several usable starters, but Webb stands alone as a clear frontline arm. He went 15-11 in 2025 with a 3.22 ERA and 224 strikeouts, which confirms his role at the top. Even so, teams aiming for October usually need more than one reliable starter.Sandy Alcantara remains an appealing option despite his 2025 numbers. He finished 11-12 with a 5.36 ERA and 142 strikeouts, but his history shows he can handle a heavy workload and perform at a high level. His contract also works for a contender, with a $17 million salary in 2026 and a $21 million club option.
How a potential trade would be structured
This would be a trade, not a signing, since Alcantara is already under contract. The most likely structure includes a top young player along with additional pieces. 
Sandy Alcantara (Image via Getty)
San Francisco would deal from its depth and future assets, while Miami would look to add controllable players who fit its timeline.
San Francisco Giants roster context and rotation outlook
The San Francisco Giants’ rotation includes Webb, Robbie Ray, Tyler Mahle, Adrian Houser, and Landen Roupp. The staff also has depth with Ryan Walker, Erik Miller, José Buttó, Tristan Beck, Spencer Bivens, JT Brubaker, and Matt Gage. On offense, the team relies on Willy Adames, Luis Arraez, Matt Chapman, Jung Hoo Lee, Heliot Ramos, Harrison Bader, and Rafael Devers, which points to a team trying to compete now.Giants pitcher2025 recordERAIPKHand Logan Webb 15-11 3.22 207.0 224 R/R Robbie Ray Not listed in source snippet — — — L/L Tyler Mahle Not listed in source snippet — — — R/R Adrian Houser Not listed in source snippet — — — R/R Landen Roupp Not listed in source snippet — — — R/R Sandy Alcantara 11-12 5.36 172.0 142 R/RThe group has depth, but adding Alcantara would raise the level at the top rather than fill a gap.
Miami Marlins roster direction and flexibility
Miami Marlins have a mix of younger and mid-career pitchers, including Eury Pérez, Max Meyer, Chris Paddack, Janson Junk, Adam Mazur, Ryan Gusto, Tyler Phillips, Braxton Garrett, and Pete Fairbanks. The position group includes Owen Caissie, Jakob Marsee, Kyle Stowers, Christopher Morel, Esteury Ruiz, Xavier Edwards, Otto Lopez, Connor Norby, and Agustín Ramírez.That roster setup explains why Alcantara could be moved. The team can turn one veteran into several pieces that better fit its timeline.
Trade impact: who benefits most
The San Francisco Giants would benefit by pairing Webb with Sandy Alcantara, giving them two reliable starters for a playoff series.Miami Marlins’ return would decide its side of the deal. If it gets a controllable everyday player and additional value, the move would help its long-term plan.PartyProsCons Giants Adds a legitimate No. 2 starter behind Webb; raises postseason ceiling; Alcantara’s contract is manageable for a contender. Costs prospect capital or controllable MLB talent; Alcantara’s 2025 results were uneven; rotation depth could thin out. Marlins Gets younger assets and more long-term flexibility; can realign payroll; avoids overcommitting to a veteran timeline. Loses a former ace and a recognizable rotation centerpiece; short-term pitching quality drops; fan-facing star power takes a hit. Alcantara Joins a more competitive situation; more likely to pitch in meaningful late-season games; could rebuild value quickly. Leaves a familiar environment; faces immediate pressure in a contender setting.
Player profiles and physical traits
PlayerDOBAge in March 2026HeightWeightB/T Sandy Alcantara 09/07/1995 30 6’5” 200 R/R Logan Webb 11/18/1996 29 6’2” 221 R/RBoth pitchers bring size and durability, which would give the San Francisco Giants a strong top of the rotation.Also read: MLB trade rumors: Milwaukee Brewers could bag $38.5 million Boston Red Sox star to fill Freddy Peralta void post blockbuster Mets tradeIf the cost stays reasonable, the Giants improve their chances by adding another top starter next to Webb. The risk is tied to Alcantara’s 2025 performance, so the move depends on him returning to his earlier level rather than what he showed last season.