▁post - gang l ionic ▁par as ym path etic ▁fib ers ▁that ▁produce ▁pen ile ▁ere ction . ▁ ▁References ▁ ▁External ▁links ▁ ▁Category : N erve ▁p lex us <0x0A> </s> ▁Sport ing ▁Tri angles ▁was ▁a ▁qu iz ▁programme , ▁de vised ▁by ▁Matthew ▁Dav ies ▁and ▁Robert ▁Lawrence , ▁which ▁tested ▁sports ▁personal ities ' ▁knowledge ▁of ▁sport . ▁The ▁programme ▁was ▁produced ▁by ▁Central ▁Television ▁and ▁a ired ▁on ▁the ▁I TV ▁network ▁for ▁four ▁series ▁from ▁ 7 ▁January ▁ 1 9 8 7 ▁until ▁ 1 3 ▁August ▁ 1 9 9 0 . ▁The ▁original ▁host ▁was ▁Nick ▁O wen , ▁who ▁hosted ▁series ▁ 1 ▁and ▁ 2 ; ▁he ▁was ▁replaced ▁by ▁Andy ▁Craig ▁for ▁the ▁final ▁two ▁series ▁( 3 ▁and ▁ 4 ). ▁ ▁Capt ains ▁included ▁Jimmy ▁Gre aves ▁and ▁Em lyn ▁Hugh es , ▁who ▁had ▁just ▁finished ▁his ▁role ▁as ▁a ▁captain ▁on ▁the ▁BBC ▁equivalent , ▁A ▁Question ▁of ▁Sport . ▁Despite ▁Hugh es ' ▁presence , ▁Sport ing ▁Tri angles ▁strugg led ▁to ▁match ▁its ▁better - known ▁rival . ▁ ▁Trans mission ▁guide ▁Series ▁ 1 : ▁ 1 2 ▁ed itions ▁ 7 ▁January ▁ 1 9 8 7 ▁– ▁ 2 5 ▁March ▁ 1 9 8 7 ▁Series ▁ 2 : ▁ 1 2 ▁ed itions ▁ 7 ▁January ▁ 1 9 8 8 ▁– ▁ 3 1 ▁March ▁ 1 9 8 8 ▁Series ▁ 3 : ▁ 1 2