▁the ▁top - fl ight ▁Serie ▁A ▁and ▁the ▁bottom - level ▁Segunda ▁C ategor ía . ▁The ▁season ▁runs ▁from ▁February ▁to ▁December ▁in ▁two ▁stages . ▁For ▁spons or ship ▁reasons , ▁it ▁is ▁known ▁as ▁the ▁Copa ▁P ils ener ▁Serie ▁B . ▁ ▁The ▁Serie ▁B ▁has ▁been ▁in ▁place ▁since ▁ 1 9 7 1 ▁and ▁has ▁been ▁held ▁on ▁a ▁year ly ▁basis ▁since ▁( except ▁ 1 9 7 3 ▁and ▁ 1 9 8 3 – 8 8 ), ▁often ▁holding ▁two ▁tournament s ▁a ▁year . ▁The ▁top ▁team ▁at ▁the ▁end ▁of ▁the ▁tournament ▁is ▁not ▁called ▁the ▁champion , ▁but ▁rather ▁the ▁winner . ▁The ▁number ▁of ▁teams ▁being ▁promoted ▁or ▁re leg ated ▁changed ▁through ▁the ▁years ▁because , ▁like ▁the ▁Serie ▁A , ▁the ▁format ▁often ▁changes ▁on ▁a ▁season al ▁basis . ▁The ▁ 2 0 1 0 ▁season ▁was ▁split ▁into ▁two ▁stages , ▁each ▁with ▁an ▁identical ▁double ▁round - ro bin ▁format . ▁The ▁team ▁with ▁the ▁most ▁points ▁at ▁the ▁end ▁of ▁both ▁stages ▁is ▁the ▁winner . ▁The ▁winner ▁and ▁runner - up ▁both ▁get ▁promoted ▁to ▁the ▁Serie ▁A ▁for ▁the ▁following ▁season ▁while ▁the ▁two ▁teams ▁with ▁the ▁few est ▁points ▁at ▁the ▁end ▁of ▁the ▁season ▁are ▁re leg ated ▁to ▁the ▁Segunda ▁C ategor ía . ▁ ▁Th irty ▁different ▁clubs ▁have ▁won ▁the ▁Serie ▁B , ▁but ▁only ▁twelve ▁have ▁won ▁it ▁multiple ▁times . ▁The ▁most ▁successful ▁team