The2017 Tercera División play-offs to Segunda División B from Tercera División (Promotion play-offs) were the final playoffs for the promotion from2016–17 Tercera División to2017–18 Segunda División B. The first four teams in each group took part in the play-off.
The eighteen group winners have the opportunity to be promoted directly toSegunda División B. The eighteen group winners were drawn into a two-legged series where the nine winners will promote to Segunda División B. The nine losing clubs will enter the play-off round for the last nine promotion spots.
The eighteen runners-up were drawn against one of the eighteen fourth-placed clubs outside their group and the eighteen third-placed clubs were drawn against one another in a two-legged series. The twenty-seven winners will advance with the nine losing clubs from thechampions' series to determine the eighteen teams that will enter the last two-legged series for the last nine promotion spots. In all the playoff series, the lower-ranked club play at home first. Whenever there is a tie in position (e.g. like the group winners in thechampions' series or the third-placed teams in the first round), a draw determines the club to play at home first.[1]
| Team 1 | Agg.Tooltip Aggregate score | Team 2 | 1st leg | 2nd leg |
|---|---|---|---|---|
| Sporting Gijón B | 1–2 | Olot | 0–1 | 1–1 |
| Deportivo Aragón | 4–1 | Calahorra | 4–1 | 0–0 |
| Olímpic | 2–3 | Talavera de la Reina | 1–0 | 1–3 |
| Formentera | 3–0 | Alavés B | 2–0 | 1–0 |
| Cacereño | 0–2 | Deportivo La Coruña B | 0–0 | 0–2 |
| Gimnástica Torrelavega | 0–3 | Atlético Madrid B | 0–1 | 0–2 |
| Atlético Malagueño | 1–4 | Gimnástica Segoviana | 1–0 | 0–4 |
| Las Palmas Atlético | 5–1 | Peña Sport | 2–1 | 3–0 |
| Real Betis B | 3–1 | Lorca Deportiva | 2–0 | 1–1 |
| Promoted toSegunda División B | ||||||||
|---|---|---|---|---|---|---|---|---|
| Atl. Madrid B (2 years later)[2] | Dep. Aragón (2 years later)[3] | Deportivo B (6 years later)[4] | Formentera (First time ever)[5] | Gimnástica Segoviana (5 years later)[6] | Las Palmas At. (2 years later)[7] | Olot (One year later)[8] | Real Betis B (One year later)[9] | Talavera de la Reina (One year later)[10] |
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| Team 1 | Agg.Tooltip Aggregate score | Team 2 | 1st leg | 2nd leg |
|---|---|---|---|---|
| Cayón | 0–6 | Rápido de Bouzas | 0–2 | 0–4 |
| Guadalajara | 0–1 | Atlético Cirbonero | 0–0 | 0–1 |
| Vilafranca | 2–2 (a) | Unión Adarve | 2–1 | 0–1 |
| Bergantiños | 2–2 (a) | Badajoz | 2–2 | 0–0 |
| Mar Menor | 2–3 | Náxara | 1–1 | 1–2 (a.e.t.) |
| Castellón | 2–2 (a) | Poblense | 0–0 | 2–2 |
| Anguiano | 2–2 (a) | Conquense | 2–2 | 0–0 |
| Oberena | 2–2 (a) | Antequera | 2–1 | 0–1 |
| Azuaga | 0–0(1–4p) | Vitoria | 0–0 | 0–0 (a.e.t.) |
| Tuilla | 1–5 | UD San Fernando | 1–2 | 0–3 |
| Móstoles URJC | 0–3 | Peralada | 0–1 | 0–2 |
| Ejea | 1–3 | Arcos | 0–0 | 1–3 |
| Cristo Atlético | 3–2 | Avilés | 2–1 | 1–1 |
| Algeciras | 1–1(3–5p) | Atlético Astorga | 1–0 | 0–1 (a.e.t.) |
| Beasain | 5–2 | Lorca FC B | 5–0 | 0–2 |
| Huétor Tájar | 2–3 | Tarazona | 1–0 | 1–3 |
| Peña Deportiva | 2–1 | Alzira | 2–1 | 0–0 |
| Ibarra | 2–3 | Tropezón | 1–0 | 1–3 |
| Ontinyent | 2–1 | Terrassa | 1–1 | 1–0 |
| Langreo | 1–2 | Almería B | 0–1 | 1–1 |
| Cerceda | 0–0(5–6p) | Jerez | 0–0 | 0–0 (a.e.t.) |
| Villa de Santa Brígida | 5–2 | Alcúdia | 4–0 | 1–2 |
| Laredo | 1–1 (a) | Utebo | 0–0 | 1–1 |
| Cultural Durango | 1–1(7–8p) | Écija | 1–0 | 0–1 (a.e.t.) |
| Cortes | 2–4 | Villarrobledo | 2–1 | 0–3 |
| SD Logroñés | 1–1(2–3p) | Alcobendas Sport | 1–0 | 0–1 (a.e.t.) |
| Unionistas | 2–1 | Águilas | 1–0 | 1–1 |
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| Team 1 | Agg.Tooltip Aggregate score | Team 2 | 1st leg | 2nd leg |
|---|---|---|---|---|
| Beasain | 2–2 (a) | Cacereño | 1–0 | 1–2 |
| Peña Deportiva | 0–3 | Atlético Malagueño | 0–0 | 0–3 |
| Cristo Atlético | 1–1(5–6p) | Alavés B | 0–1 | 1–0 (a.e.t.) |
| Castellón | 4–4 (a) | Peña Sport | 4–2 | 0–2 |
| Laredo | 3–4 | Calahorra | 2–2 | 1–2 |
| Unionistas | 1–5 | Olímpic | 1–0 | 0–5 |
| Almería B | 1–2 | Sporting Gijón B | 1–0 | 0–2 |
| Alcobendas Sport | 3–1 | Gimnástica Torrelavega | 1–0 | 2–1 |
| Jerez | 1–5 | Lorca Deportiva | 1–1 | 0–4 |
| Écija | 3–3 (a) | UD San Fernando | 2–0 | 1–3 |
| Ontinyent | 2–0 | Arcos | 1–2 | 2–0 |
| Villarrobledo | 2–2(4–5p) | Náxara | 1–1 | 1–1 (a.e.t.) |
| Villa de Santa Brígida | 0–2 | Rápido de Bouzas | 0–1 | 0–1 |
| Tropezón | 1–5 | Atlético Astorga | 0–1 | 1–4 |
| Vitoria | 5–0 | Atlético Cirbonero | 3–0 | 2–0 |
| Unión Adarve | 3–2 | Tarazona | 2–0 | 1–2 |
| Peralada | 4–3 | Conquense | 3–0 | 1–3 |
| Antequera | 3–4 | Badajoz | 2–2 | 1–2 |
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| Team 1 | Agg.Tooltip Aggregate score | Team 2 | 1st leg | 2nd leg |
|---|---|---|---|---|
| Beasain | 4–7 | Sporting Gijón B | 2–2 | 2–5 |
| Ontinyent | 3–3(4–2p) | Alavés B | 3–0 | 0–3 (a.e.t.) |
| Alcobendas Sport | 2–5 | Lorca Deportiva | 1–2 | 1–3 |
| Écija | 2–2(4–3p) | Olímpic | 1–1 | 1–1 (a.e.t.) |
| Badajoz | 2–1 | Calahorra | 0–0 | 2–1 |
| Náxara | 2–4 | Peña Sport | 1–1 | 1–3 |
| Unión Adarve | 4–4 (a) | Atlético Malagueño | 2–0 | 2–4 |
| Vitoria | 2–2 (a) | Atlético Astorga | 1–0 | 1–2 |
| Rápido de Bouzas | 3–3 (a) | Peralada | 1–1 | 2–2 |
| Promoted toSegunda División B | ||||||||
|---|---|---|---|---|---|---|---|---|
| Badajoz (6 years later)[11] | Écija (3 years later)[12] | Lorca Deportiva (First time ever) | Ontinyent (3 years later) | Peña Sport (One year later)[13] | Rápido de Bouzas (First time ever)[14] | Sporting Gijón B (One year later)[15] | Unión Adarve (First time ever)[16] | Vitoria (First time ever)[17] |