The San Francisco Giants had everything going for them through the first seven innings of this series finale.

Things weren't looking too good for the New York Mets as they entered the bottom of the eighth inning trailing 2-0.

Jung Hoo Lee recorded a two-out, two-RBI single in the top of the fourth to give the Giants an early lead.

Cesar Perdomo threw six scoreless innings in an outing that saw him allow just three hits. He struck out four Mets batters and only allowed one walk, and then the recently acquired Joel Kuhnel pitched a clean inning after him.

Come the bottom of the eighth, Carson Seymour allowed three hits, two of which were home runs.

Seymour took the loss in a game that saw all four of the Mets' runs come in the bottom of the eighth, and then the Giants were retired in order in the top of the ninth.

Whether it's the starting pitching or the bullpen, there always seems to be something that goes wrong with this Giants team.

They're now 59-85 this season, and while it would take a miracle for them to lose 100 games in 2026, it's still a possibility should they go 3-15 down the stretch.

Seymour allowed a solo homer just three pitches into his outing, and then things only got worse from there.

Two pitches later, he gave up a single, and then two pitches after that the runner advanced to second on a sacrifice bunt.

Seymour would record his second out of the inning, and then the Giants decided to intentionally walk Juan Soto.

With runners on first and second with two outs, Bo Bichette made Seymour pay with a 412-foot homer that he crushed on the second pitch of his at-bat.

The decision to walk Soto will be questioned in hindsight, but that all falls on Seymour for giving Bichette an 89-mph slider in the heart of the plate. The Mets beat the Giants 4-2 on Sunday.

Officially, this marks two straight series losses for the Giants. They haven't won a series since Aug. 24-26, and they're now 26 games under .500 with only 18 remaining.

It's mathematically impossible for this team to finish with a .500 record, so at this point they just need to see what they have on the roster heading into next season.

At the end of the day, it's another heartbreaking loss for the Giants in a winnable game that they let slip away from them.