9 ▁call '. ▁L ions ▁management ▁had ▁decided ▁that ▁the ▁Spring b oks ▁domin ated ▁their ▁oppon ents ▁with ▁physical ▁ag gression , ▁so ▁decided ▁" to ▁get ▁their ▁ret ali ation ▁in ▁first ". ▁At ▁the ▁call ▁of ▁' 9 9 ' ▁each ▁L ions ▁player ▁would ▁attack ▁their ▁nearest ▁rival ▁player . ▁The ▁" b attle ▁of ▁Bo et ▁Er as mus ▁Stadium " ▁was ▁one ▁of ▁the ▁most ▁violent ▁matches ▁in ▁rugby ▁history . ▁ ▁Sport ing ▁isol ation : ▁ 1 9 7 0 s – 1 9 8 0 s ▁The ▁ 1 9 7 6 ▁All ▁Black s ▁tour ▁of ▁South ▁Africa ▁went ▁ahead , ▁and ▁the ▁Spring b oks ▁won ▁by ▁three ▁Test s ▁to ▁one , ▁but ▁coming ▁shortly ▁after ▁the ▁S ow eto ▁ri ots ▁the ▁tour ▁attract ed ▁international ▁condem n ation . ▁Tw enty - e ight ▁countries ▁boy c otted ▁the ▁ 1 9 7 6 ▁Summer ▁Olympics ▁in ▁protest , ▁and ▁in ▁ 1 9 7 7 ▁the ▁Gl ene ag les ▁Ag re ement ▁disc ou rag ed ▁any ▁Commonwealth ▁sport ing ▁contact ▁with ▁South ▁Africa . ▁In ▁response ▁to ▁the ▁growing ▁pressure , ▁the ▁seg reg ated ▁South ▁African ▁rugby ▁un ions ▁merged ▁in ▁ 1 9 7 7 . ▁A ▁planned ▁ 1 9 7 9 ▁Spring b ok ▁tour ▁of ▁France ▁was ▁blocked ▁by ▁the ▁French ▁government . ▁ ▁The ▁L ions ▁tou red ▁South ▁Africa ▁in ▁ 1 9 8 0 , ▁losing ▁the ▁first