Siwoo LoL: Career, Champions and Worlds 2026

Siwoo (Jeon Si-woo, 전시우) is the South Korean top laner for Dplus Kia in the LCK. He has held the role since 30 November 2024. In that time the organization has won the LCK 2025 Rounds 3–5 title and the Esports World Cup 2026.

As a LoL player, Siwoo is known for a broad top-lane pool. It runs from frontline picks such as K’Sante to carry and lane-bully options such as Gnar and Jayce. He is also willing to take bot-lane champions like Vayne and Varus into the top lane when the draft calls for it. He was born on 24 November 2007, and he heads to Worlds 2026 as one of Korea’s starting top laners.

Siwoo’s 2026 is a heavier farming year but a slightly less efficient one than 2025. Last season he finished 93–70, a 57.1% win rate. This year his win rate sits a little lower, and Dplus Kia is still adding games ahead of Worlds.

The biggest shift is in how he spends his time on the map. His CS/min and gold/min are both clearly up on 2025, but his kill participation has dropped well below last year’s 51.6%. Read together, that points to a top laner holding a side lane and soaking resources more often, and joining fewer of the team’s early skirmishes.

His share of the team’s damage has barely moved, so the extra farm is turning into roughly the same slice of the fight, not a bigger one. His KDA has also fallen below last season’s 2.81, a sign that the picks he is playing more often (Jayce above all) have been costing him more deaths. Vision per minute is up, which fits a player spending more time alone on a side of the map and warding his own flank.

He is also drafting a wider pool than in 2025, when he played 20 champions. In a year with Fearless-style draft pressure across many events, that breadth gives Dplus Kia more room to hide its top lane pick until late in the draft.

K’Sante and Gnar are the champions that win for Siwoo this season, and both have real samples behind them. Jayce is his most played champion of 2026, but it is also one of his least successful: he has lost more Jayce games than he has won.

That gap says a lot about how Dplus Kia uses him. Jayce is a lane-pressure pick that asks the top laner to win his matchup and convert it into turret damage. When that lead does not come, the champion falls off in teamfights. K’Sante and Gnar give the team something more reliable: a frontline that can absorb engages, or a ranged laner who can flip a fight with his transformation.

Several of his familiar picks are below an even record on enough games to take seriously. Ambessa, Sion and Jax have all lost more often than they have won, and Jax has been the hardest of the three this year. Olaf and Rumble sit at an even split, and Rumble has not been drafted since 23 May 2026.

The rest of the table is pocket picks. Vayne, Varus, Tristana, Illaoi and Aurora have all appeared, but on too few games to call any of them strong or weak. Gwen worked early in the year and has not been played since 22 February 2026. The ranged top picks matter more as a draft tool than a stat line: they let Dplus Kia flex a champion between top and bot.

Across his career, K’Sante, Jax, Gnar, Rumble and Renekton are the staples, with K’Sante the clear centerpiece and Rumble carrying one of the best career records in his pool. The career table also reaches back before his Dplus Kia years: his Udyr games were last played on 30 January 2024.

Siwoo’s builds show a top laner who wants to win lane first and then play to his champion’s role. Every one of his top three champions runs Flash and Teleport, so he is always planning for a cross-map play around Dragon or a side-lane fight.

His Jayce goes Muramana first, then Youmuu’s Ghostblade, with Serpent’s Fang and Serylda’s Grudge as the common follow-ups. Black Cleaver and Edge of Night show up when he needs more durability. That is a poke-and-burst item path built to punish ranged harass.

The runes are the interesting part. He takes Grasp of the Undying in Resolve with Demolish, Bone Plating and Unflinching, plus Triple Tonic and Cosmic Insight from Inspiration. Grasp and Demolish turn lane trades into turret damage, and Bone Plating lets him survive the all-in that melee top laners look for against Jayce. The page is built to bully a lane and take plates, not to win late fights.

On K’Sante he builds Jak’Sho and The Protean, then Iceborn Gauntlet and Kaenic Rookern. Spirit Visage, Thornmail, Randuin’s Omen and Unending Despair rotate in by matchup. The rune page is Grasp of the Undying with Shield Bash and Second Wind, plus Biscuit Delivery and Cosmic Insight, a sustain-heavy setup for surviving lane against a carry top laner and arriving at teamfights at full health.

His Gnar opens with Trinity Force, then Black Cleaver, Randuin’s Omen, Sterak’s Gage or Wit’s End. He runs Precision with Legend: Alacrity and Cut Down, and takes Bone Plating and Unflinching from Resolve. It is a bruiser Gnar meant to win extended fights in Mega form, not a backline-poke version.

If you play these champions in ranked, check the latest patch notes before you copy a pro build. Stage builds answer specific drafts, and the champion guides on MID.GG cover the solo queue versions.

Siwoo’s latest games come from the LCK 2026 Season Playoffs, in series against BNK FEARX, KT Rolster and T1. He reached for a different champion almost every game: Varus and Yorick against BNK FEARX, Vayne, Gnar, Renekton and Jayce against KT Rolster, then K’Sante, Gnar, Trundle and Jax against T1. Each game with a recording has a Watch link in the table.

Watch his best Jayce, K’Sante and Gnar games of the season below.

Siwoo’s listed career is a single team: he joined Dplus Kia as its top laner on 30 November 2024 and has started there since. His career champion data reaches further back, into early 2024, but his history as a starter in the LCK begins with this roster.

His first full season, 2025, was a winning one. He played 163 games and helped Dplus Kia take the LCK 2025 Rounds 3–5 title on 31 August 2025. In 2026 he added the Esports World Cup on 19 July 2026, the first international trophy of his career.

The arc so far is a fast one: a domestic title in his first year and an international one in his second. The open question for the rest of 2026 is whether his farming-heavy, wider-pool style holds up against the strongest top laners at Worlds. For the wider LCK and international picture, our esports coverage tracks every event.

The Esports World Cup 2026 is the result that defines Siwoo’s standing. It is an international title against teams from every major region, and two of his best K’Sante games of the season came at that event. It puts him among the top laners with a trophy won outside Korea.

The LCK 2025 Rounds 3–5 title matters for a different reason. He won it in his first season as a starter, which showed he could hold a top lane in Korea’s league from the start rather than growing into it.

Siwoo is at Worlds 2026 with Dplus Kia, which qualified as Korea #4. The team starts in the Main Event, entering the Swiss stage on 23 October 2026, with the Knockouts to follow for the teams that advance. Follow every stage on the Worlds 2026 hub.