| Competition: | e·on férfi OB I |
| Season: | 2017–18 |
| Winners: | FTC-PQS Waterpolo (22nd title) |
| Relegated: | ContiTech Szeged |
| Continentalcup1: | Champions League |
| Continentalcup2: | Euro Cup |
| Continentalcup2 Qualifiers: | A-HÍD OSC Újbuda |
| League Topscorer: | Alex Bowen (66 goals) |
| Prevseason: | 2016–17 |
| Nextseason: | 2018–19 |
The 2017–18 Országos Bajnokság I (known as the e·on férfi OB I osztályú Országos Bajnokság for sponsorship reasons) was the 112th season of the Országos Bajnokság I, Hungary's premier Water polo league.
The following 16 clubs compete in the OB I during the 2017–18 season:
| bgcolor=#DD0000 align="center" colspan="17" | OB I | ||||
| Team | City | Pool | Founded | Colours | |
|---|---|---|---|---|---|
| AVUS | Szombathelyi Városi Uszoda | 2010 | |||
| BVSC | Budapest (XIV. ker) | Szőnyi úti uszoda | 1911 | ||
| Debrecen | Debrecen | Debreceni Sportuszoda | 2006 | ||
| Eger | Eger | Bitskey Aladár uszoda | 1910 | ||
| FTC | Budapest (IX. ker) | Népligeti uszoda | 1899 | ||
| Honvéd | Budapest (XIX. ker) | Kőér utcai uszoda | 1950 | ||
| Kaposvár | Kaposvár | Virágfürdő | 1999 | ||
| Miskolc | Miskolc | Kemény Dénes Sportuszoda | 2012 | ||
| OSC | Budapest (XI. ker) | Nyéki Imre uszoda | 1957 | ||
| PVSK | Pécs | Abay Nemes Oszkár Sportuszoda | 1997 | ||
| Szeged | Szeged | Szegedi Sportuszoda | 1993 | ||
| Szentes | Szentes | Dr. Rébeli Szabó József Sportuszoda | 1934 | ||
| Szolnok | Szolnok | Tiszaligeti uszoda | 1921 | ||
| TVSE | Tatabánya | Tatabányai Sportuszoda | 1992 | ||
| UVSE | Budapest (IV. ker) | Hajós Alfréd Sportuszoda | 2008 | ||
| Vasas | Budapest (XIII. ker) | Komjádi Béla Sportuszoda | 1945 |
In the table below the home teams are listed on the left and the away teams along the top.
In the table below the home teams are listed on the left and the away teams along the top.
The top four teams, from two groups advance from the regular season. Teams start the Championship round with their points from the Regular season.
Key numbers for pairing determination (number marks position after 14 games)
| Rounds | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 15th | 16th | 17th | 18th | 19th | 20th | 21st | 22nd | ||
| A1 - B4 B1 - A4 A2 - B3 B2 - A3 | A1 - B2 B1 - A2 B4 - A3 A4 - B3 | B3 - A1 A3 - B1 A2 - B4 B2 - A4 | A1 - B1 A2 - B2 B3 - A3 B4 - A4 | B4 - A1 A4 - B1 B3 - A2 A3 - B2 | B2 - A1 A2 - B1 A3 - B4 B3 - A4 | A1 - B3 B1 - A3 B4 - A2 A4 - B2 | B1 - A1 B2 - A2 A3 - B3 A4 - B4 | ||
In the table below the home teams are listed on the left and the away teams along the top.
The bottom four teams, from two groups advance from the regular season. Teams start the Relegation round with their points from the Regular season.
In the table below the home teams are listed on the left and the away teams along the top.
| Team 1 | Points | Team 2 | Games in the season | Game 1 | Game 2 | Game 3 | ||
|---|---|---|---|---|---|---|---|---|
| FTC-PQS Waterpolo (1) | 9–0 | A-HÍD OSC Újbuda (4) | 12-5 | 10-6 | 8-4 | — | — | |
| Szolnoki Dózsa (2) | 9–6 | ZF-Eger (3) | 16-7 | 7-8 | 13-14 (p) | 12-6 | 9-4 |
Higher ranked team hosted Game 1 and Game 3 plus Game 5 if necessary. The lower ranked hosted Game 2 plus Game 4 if necessary.
----------------FTC-PQS Waterpolo won the Final series 3–2.
Higher ranked team hosted Game 1 plus Game 3 if necessary. The lower ranked hosted Game 2.
----ZF-Eger won the Third place.
| Team 1 | Points | Team 2 | Games in the season | Game 1 | Game 2 | Game 3 | ||
|---|---|---|---|---|---|---|---|---|
| MKB Euroleasing-BVSC-Zugló (5) | 9–3 | Debreceni VSE (8) | 10-11 | 12-8 | 10-4 | 10-9 | — | |
| PannErgy-Miskolci VLC (6) | 7–1 | RacioNet Honvéd (7) | 11-6 | 9-9 | 8-3 | — | — |
| Team 1 | Points | Team 2 | Games in the season | Game 1 | Game 2 | Game 3 | ||
|---|---|---|---|---|---|---|---|---|
| PVSK-Mecsek Füszért (9) | 9–6 | Metalcom Szentes (12) | 8-3 | 10-11 | 11-6 | 2-16 | 7-5 | |
| Kaposvári VK (10) | 9–6 | VasasPlaket (11) | 8-7 | 3-10 | 14-13 | 7-8 | 11-4 |
| Team 1 | Points | Team 2 | Games in the season | Game 1 | Game 2 | Game 3 | ||
|---|---|---|---|---|---|---|---|---|
| AVUS Szombathely (13) | 9–0 | ContiTech Szeged (16) | 13-11 | 13-8 | 12-7 | — | — | |
| Tatabányai VSE (14) | 9–0 | UVSE (15) | 9-6 | 9-4 | 7-6 | — | — |
| Rank | Player | Team | Goals |
|---|---|---|---|
| 1 |  Alex Bowen | MVLC | 66 |
| 2 |  Márton Vámos | FTC | 62 |
| 3 |  Strahinja Rašović | Eger | 61 |
| 4 | Dénes Varga | FTC | 60 |
| 5 | Andrija Prlainović | Szolnok | 56 |
| 6 | Gergő Zalánki | Szolnok | 54 |
| 7 |  Aaron Younger | Szolnok | 52 |
| 8 | Angelos Vlachopoulos | Eger | 49 |
| 9 | Márton Nagy | Szentes | 48 |
| Mátyás Pásztor | BVSC | 48 |
| Rank | Player | Team | Rating | |
|---|---|---|---|---|
| 1 | Márton Vámos | FTC | 75.0 | |
| 2 | Alex Bowen | MVLC | 68.4 | |
| 3 | Strahinja Rašović | Eger | 68.3 | |
| 4 | Dénes Varga | FTC | 64.2 | |
| 5 |  Saša Mišić | MVLC | 64.0 | |
| 6 | Angelos Vlachopoulos | Eger | 63.9 | |
| 7 | Gergő Zalánki | Szolnok | 61.3 | |
| 8 | Alex Csacsovszky | PVSK | 60.2 | |
| 9 | Tamás Mezei | Szolnok | 55.4 | |
| 10 | Gábor Kis | Szolnok | 55.3 |
| Rank | Player | Team | Fouls |
|---|---|---|---|
| 1 | Dimitrije Obradović | DVSE | 57 |
| 2 | Bálint Takács | Vasas | 55 |
| 3 | Zsombor Horváth | PVSK | 53 |
| Dávid Jansik | Szolnok | 53 | |
| Szilárd Jansik | FTC | 53 | |
| Kristóf Takács | AVUS | 53 | |
| 7 |  Erik Bundschuch | OSC | 52 |
| Tibor Kókai | Szentes | 52 | |
| 9 | Dávid Hőna | Vasas | 50 |
| Máté Sántavy | Kaposvár | 50 |
| Pos. | County (megye) | № of teams | Teams | |
|---|---|---|---|---|
| 1 | Budapest (capital) | 6 | BVSC, FTC, Honvéd, OSC, UVSE and Vasas | |
| 2 | Csongrád | 2 | Szegedi VE and Szentesi VK | |
| 3 | Baranya | 1 | Pécsi VSK | |
| Borsod-Abaúj-Zemplén | 1 | Miskolci VLC | ||
| Hajdú-Bihar | 1 | Debreceni VSE | ||
| Heves | 1 | Egri VK | ||
| Jász-Nagykun-Szolnok | 1 | Szolnoki Dózsa | ||
| Komárom-Esztergom | 1 | Tatabányai VSE | ||
| Somogy | 1 | Kaposvári VK | ||
| Vas | 1 | AVUS Szombathely | ||