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White Sox exit 2025 with a 31-win jolt — and spend the winter building the bullpen lead that turns hope into October

CHICAGO — The last box got checked with a W.

On the season’s final weekend, the Chicago White Sox walked into Washington and walked out with a 7-3 win — a tidy bow on a year that was never going to be defined by one afternoon, but was defined by something that matters in a rebuild: proof of life.

The Sox finished 72-90, good for fifth in the AL Central, 13 games back — and still, the most important number in the room wasn’t in the standings.

It was 31.

That’s how many wins they added from the year before, the kind of jump that doesn’t erase the past, but does change the conversation. And in an end-of-season press conference that felt more like a temperature check than a funeral, manager PJ Bishop leaned into it.

“We improved by 31 wins and I think our fan base is smart enough to see that we are putting a better product on the field,” Bishop said. “We should continue to get better as we mature and gain experience.”

That’s the thesis of the White Sox’ 2025: not a playoff chase, but a real foundation — with an identity, young pieces that didn’t blink, and one glaring missing link they’re now spending aggressively to fix.

The 2025 White Sox: fast, on-base driven — and still waiting on the pitching to match the energy

If you wanted to understand what the White Sox were trying to be, you didn’t need a scouting report. You needed a stopwatch.

Chicago led the league in stolen bases (414) and finished No. 1 in baserunning value (+11.6). They were a constant problem — first-to-third pressure, extra outs forced, innings extended, mistakes punished. That wasn’t accidental.

“Yes — I will always seek out guys who can get on base and cause havoc,” Bishop said.

That approach helped Chicago finish third in the AL in runs (738) while sitting near the top in on-base rate (.318 OBP, third in the AL). They didn’t always mash, but they made pitchers work and made defenses move.

Still, Bishop wasn’t pretending the lineup is a finished product.

“I would certainly like to attain more power,” he said. “Some of that is guys filling out… and yeah, if the right guy is out there I would certainly try and bring them in.”

The current version of the Sox hit 160 home runs (near the bottom of the league) and ran hot-and-cold by month — including a brutal 6-22 May that buried any early dreams of a surprise run. But the back half told a different story: 16-12 in August and 13-12 in September. Not dominant. But stable. Competitive. Gaining traction.

And Bishop’s biggest “we’re close” stat wasn’t runs scored. It was the one the Sox didn’t lock down.

Chicago went 22-25 in one-run games and 8-10 in extras. That’s where young teams learn the hard lesson: you can’t just play well — you have to finish.

“As we improve, securing those 1-3 run leads is what will make us a .500 team that missed the playoffs to a playoff team,” Bishop said.

That line ended up reading like a mission statement for the winter.

The stars: Robert stayed the center; Vargas became the surge

There were building blocks all over the roster, but Luis Robert Jr. remained the centerpiece — the one player who looked like he belonged in the middle of a contender’s lineup even when the team around him was still growing into itself.

He led the club in RBIs (92) and WAR (3.2), hit 24 homers, and stole a jaw-dropping 75 bases. In the field, he was steady — nearly spotless — the kind of defense that makes young pitchers exhale.

But the player Bishop couldn’t stop coming back to in that press conference was Miguel Vargas.

Vargas led the Sox in home runs (26) and finished second in RBIs (80) while showing the power/speed blend that can warp a lineup when it fully clicks.

“Miguel Vargas was by far the most improved player and can still get better,” Bishop said. “The power and speed is there — but more consistent hitting and better defense would make him an MVP candidate.”

That’s the upside Chicago is chasing: not “nice player,” but “game-changer.”

Behind them, young contributors cycled in and out until the staff settled on a group they trusted.

“We kept plugging guys in and out until I felt happy with the nine we had — up and down,” Bishop said.

The youth movement wasn’t just a roster note — it was the whole story.

“Youth,” Bishop said when asked to sum up the season. “We were and are one of the youngest teams in the league.”

And yes, the defense showed that at times. Chicago’s overall defensive efficiency was respectable, but they paid for learning curves — and for some players being asked to do too much, too soon.

“A couple of guys were playing out of position or lacking experience,” Bishop said. “I think a full offseason/spring training will do a lot of these guys a real solid.”

The rotation reality: Vasil delivered, the kids flashed — and the innings had to be managed

If the Sox had a true rotation stabilizer in 2025, it was Mike Vasil.

Vasil posted a 3.21 ERA, led the staff in wins (11) and innings (176.2), and gave Chicago the most valuable thing a young pitching group can have: predictability.

Behind him, Shane Smith piled up strikeouts (175) while navigating the workload realities that come with youth. And Bishop made it clear that the innings limits weren’t caution for caution’s sake — it was a plan.

“Smith should be back to full health soon — it was just a minor injury,” Bishop said. “The staff was relatively healthy, just young, so naturally we had to limit innings.”

That youth showed up in the big-picture numbers: Chicago’s pitching staff finished near the bottom of the AL in run prevention (4.57 team ERA, 791 runs allowed).

And that’s why the offseason turned into a very specific shopping trip: get the pitching closer to the level of the lineup’s energy — and get the bullpen to the point where leads stop feeling like cliffhangers.

“Pitching! It’s coming,” Bishop said. “And soon enough we will be a force to reckon with.”

Then the front office went out and tried to accelerate that timeline.

Offseason moves: Chicago buys late-inning certainty, adds defense/speed up the middle, and stocks the next wave
Oct. 31: Sox trade for SS Nasim Nunez

Chicago sent 1B Ryan Galanie (25) and 2B Loidel Chapelli (23, minors) to Washington for SS Nasim Nunez (25) — a move that screams “team identity.”

Nunez brings speed, switch-hit flexibility, and defensive chops in the middle infield — the kind of piece that fits the Bishop blueprint: get on base, run, make plays.

Nov. 21: roster turnover

The Sox released SP Davis Martin, RP Jesse Scholtens, RP Fraser Ellard, and RP Jared Shuster, and let RP Bryse Wilson walk as a non-tender.

In other words: clear the deck, re-aim the pitching room.

Dec. 15: Rule 5 adds a lefty

Chicago selected RP Garrett McDaniels from the Dodgers organization in the Rule 5 draft — a bullpen depth swing with real traits (and the kind of low-cost bet rebuilding teams should take).

Dec. 24: Chicago lands Jack Flaherty and Luke Weaver

The Sox signed SP Jack Flaherty to a two-year, $18 million deal and added RP Luke Weaver on a one-year, $6.2 million contract.

Flaherty gives them a veteran rotation anchor — someone who can take the ball, absorb innings, and keep younger starters from being asked to carry too much too soon. Weaver is a bridge arm: leverage capable, role flexible.

Jan. 9: the headline — Edwin Diaz to close

The Sox signed RP Edwin Diaz to a four-year, $112.8 million deal, surrendering a 2026 third-round pick as compensation.

This is the clearest sign yet that Chicago believes it’s nearing the stage where close games shouldn’t feel like coin flips. Diaz isn’t a depth piece. He’s a statement: we’re ready to start ending nights cleanly.

International signings: the long view

Chicago added a cluster of teenage talent:

LF Manny Delgado (17) — Venezuela

LF Enrique Cortez (16) — Dominican Republic

3B Jesus Barrientos (16) — Dominican Republic

RF Victor Escobedo (16) — Dominican Republic

LF Enrique Aguilar (16) — Dominican Republic

You don’t feel these names now. You feel them later — and smart organizations keep planting those seeds.

2026 Spring Training: the “close it out” era begins

Spring in camp brings two immediate storylines: the shape of the rotation and how the bullpen stacks up behind Diaz.

Rotation snapshot

Chicago is lining up as a six-man rotation, with Grant Taylor sitting at the top of the board, followed by Flaherty, Vasil, Smith, Cannon, and Tyler Schweitzer.

It’s a fascinating mix: one potential front-end arm (Taylor), one veteran stabilizer (Flaherty), and a cluster of young starters who got real innings (and real lessons) last season.

Bullpen snapshot

The relief group now starts with a true endgame:

Edwin Diaz at the top, with arms like Jason Adam, Luke Weaver, Victor Mendez, and McDaniels in the mix — plus a wave of young, live-armed depth behind them.

This is what Bishop meant when he talked about turning one-run losses into wins. It doesn’t take 10 new players. Sometimes it takes one closer — and a bullpen structure that stops asking everyone to pitch outside their lane.

Lineup look: speed still reigns, but the power question remains

The early lineup blueprint keeps the engine intact — Chase Meidroth setting the table, Robert in the heart, Vargas as the thunder-with-legs, and a lot of athleticism across the diamond.

The question isn’t whether Chicago can create chaos.

The question is whether 2026 is the year the chaos comes with more damage.

What’s next: the 2026 goal is simple — play meaningful games, longer

Bishop didn’t promise a playoff berth at the podium. He promised progress — and a standard.

“I don’t expect another 31-game improvement,” he said. “But certainly would love to be .500 or better by the end of 2026.”

That’s the bar now.

The White Sox ran like a contender, competed like a young team learning how to win, and finally acted like a franchise ready to spend on the exact thing that separates “fun story” from “real threat”: pitching that finishes games.

The leap happened in 2025.

The payoff is what they’re trying to buy — and build — in 2026.