8 games · 2018–2026 · 3 classical · 5 online
Yoo 34 draws1 Zierk
62.5% for Yoo
Openings between them
| B52 | Sicilian Defense: Moscow Variation, Main Line | 2 | 50.0% |
| A15 | English Opening: Anglo-Indian Defense, Anti-Anti-Grünfeld | 1 | 50.0% |
| B30 | Sicilian Defense: Closed, Anti-Sveshnikov Variation, with Nf6 | 1 | 100.0% |
| C03 | French Defense: Tarrasch Variation, Morozevich Variation | 1 | 50.0% |
| C11 | French Defense: Classical Variation, Burn Variation, Morozevich Line | 1 | 50.0% |
| C16 | French Defense: Winawer Variation, Petrosian Variation | 1 | 50.0% |
| C77 | Ruy Lopez: Morphy Defense, Anderssen Variation | 1 | 100.0% |
All games
| Zierk, S2489 | 0-1 | Yoo, Christopher Woojin2607 | 2nd 3-0 Thu 9th Jul 2026 | 2026 |
| Zierk, S2489 | 1-0 | Yoo, Christopher Woojin2605 | 3rd 3-0 Thu 25th Jun 2026 | 2026 |
| Zierk, S2489 | 0-1 | Yoo, Christopher Woojin2605 | Titled Tue 9th Jun 2026 | 2026 |
| Zierk, S2501 | ½-½ | Yoo, Christopher Woojin2588 | Titled Tue 19th Nov Late | 2024 |
| Yoo, Christopher Woojin2499 | 1-0 | Zierk, S2488 | Titled Tuesday 16th Nov | 2021 |
| Zierk, S2512 | ½-½ | Yoo, Christopher Woojin2449 | St Louis Inv GM 2019 | 2019 |
| Yoo, Christopher Woojin2430 | ½-½ | Zierk, S2501 | CCCSA Summer A GM 2019 | 2019 |
| Yoo, Christopher Woojin2410 | ½-½ | Zierk, S2506 | St Louis Fall B 2018 | 2018 |