The 2017–18 Tercera División was the fourth tier in Spanish football. It began play in August 2017 and ended in late June 2018 with the promotion play-off finals.[1]
Competition format
The top four eligible teams in each group will play the promotion playoffs.
The champion of each group will qualify to 2018–19 Copa del Rey. If the champion is a reserve team, the first non-reserve team qualified will join the Copa.
In each group, at least three teams will be relegated to Regional Divisions.
Source: Futbolme Rules for classification: 1) points; 2) head-to-head points; 3) head-to-head goal difference; 4) goal difference; 5) number of goals scored; 6) fair-play points; 7) playoff match (O) Play-off winners; (P) Promoted; (R) Relegated Notes:
^3 points docked by not playing their match against Langreo, due to problems with the kit colors. Langreo was given the match by 3–0.[2] Finally, the match was played on 30 June 2018, after finishing the season, and Langreo won it by 8–0.
Source: [citation needed] Rules for classification: 1) points; 2) head-to-head points; 3) head-to-head goal difference; 4) goal difference; 5) number of goals scored; 6) fair-play points; 7) playoff match (O) Play-off winners; (P) Promoted; (R) Relegated Notes:
^ abSan Fernando de Henares finished ahead of Alcobendas Sport on head-to-head goal difference: San Fernando de Henares–Alcobendas Sport 0–1, Alcobendas Sport–San Fernando de Henares 1–4
^ abVillaverde San Andrés finished ahead of Leganés B on head-to-head points: Villaverde San Andrés–Leganés B 1–1, Leganés B–Villaverde San Andrés 0–1
^ abSanta Ana finished ahead of Tres Cantos on head-to-head points: Santa Ana–Tres Cantos 0–0, Tres Cantos–Santa Ana 1–3
Source: [citation needed] Rules for classification: 1) points; 2) head-to-head points; 3) head-to-head goal difference; 4) goal difference; 5) number of goals scored; 6) fair-play points; 7) playoff match (O) Play-off winners; (P) Promoted; (R) Relegated Notes:
^ abCristo Atlético finished ahead of Salmantino on head-to-head points: Salmantino–Cristo Atlético 0–1, Cristo Atlético–Salmantino 1–1
^ abLa Virgen del Camino finished ahead of Cebrereña on head-to-head goal difference: Cebrereña–La Virgen del Camino 2–1, La Virgen del Camino–Cebrereña 2–0
^ abAtlético Bembibre finished ahead of Almazán on head-to-head points: Almazán–Atlético Bembibre 1–1, Atlético Bembibre–Almazán 2–1
^ abReal Burgos finished ahead of Becerril on head-to-head points: Real Burgos–Becerril 1–1, Becerril–Real Burgos 0–2
Source: [citation needed] Rules for classification: 1) points; 2) head-to-head points; 3) head-to-head goal difference; 4) goal difference; 5) number of goals scored; 6) fair-play points; 7) playoff match (O) Play-off winners; (P) Promoted; (R) Relegated Notes:
^ abcJaén finished ahead of Antequera and Huétor Tájar on head-to-head points: Jaén 9 pts, Antequera 7 pts, Huétor Tájar 1 pt
^ abEl Palo finished ahead of Ciudad de Torredonjimeno on head-to-head points: Ciudad de Torredonjimeno–El Palo 2–2, El Palo–Ciudad de Torredonjimeno 3–1
^ abAtarfe Industrial finished ahead of San Pedro on head-to-head points: San Pedro–Atarfe Industrial 0–0, Atarfe Industrial–San Pedro 2–0
Source: [citation needed] Rules for classification: 1) points; 2) head-to-head points; 3) head-to-head goal difference; 4) goal difference; 5) number of goals scored; 6) fair-play points; 7) playoff match (O) Play-off winners; (P) Promoted; (R) Relegated Notes:
^ abLebrijana finished ahead of Sevilla C on head-to-head points: Sevilla C–Lebrijana 1–4, Lebrijana–Sevilla C 3–3
^ abcdSan Roque de Lepe finished ahead of Atlético Espeleño, Utrera, and Guadalcacín on head-to-head points: San Roque de Lepe 10 pts, Atlético Espeleño 8 pts, Utrera 7 pts, Guadalcacín 4 pts
^ abXerez finished ahead of Los Barrios on head-to-head points: Los Barrios–Xerez 0–3, Xerez–Los Barrios 0–1
^ abAtlético Onubense is ahead of Alcalá on head-to-head goal difference: Atlético Onubense–Alcalá 0–1, Alcalá–Atlético Onubense 1–3
Source: [citation needed] Rules for classification: 1) points; 2) head-to-head points; 3) head-to-head goal difference; 4) goal difference; 5) number of goals scored; 6) fair-play points; 7) playoff match (R) Relegated Notes:
^Because Iruña is an affiliated club to Osasuna and Osasuna B was relegated from Segunda División B, Iruña could not play the promotion playoffs and was relegated.[4]
^ abSubiza finished ahead of Cantolagua on head-to-head points: Subiza–Cantolagua 5–1, Cantolagua–Subiza 2–2
^ abCorellano finished ahead of Oberena on head-to-head points: Corellano–Oberena 2–0, Oberena–Corellano 0–1
^Relegated due to the relegations of regional teams from Segunda División B.
^ abIdoya finished ahead of River Ega on head-to-head points: Idoya–River Ega 4–3, River Ega–Idoya 1–1