▁nine ▁strike outs ▁was ▁the ▁second - high est ▁strike - out ▁total ▁for ▁a ▁National s ▁pitch er ▁during ▁a ▁major ▁league ▁debut , ▁exceed ed ▁only ▁by ▁Stephen ▁Str as burg ′ s ▁ 1 4 ▁strike outs ▁on ▁June ▁ 8 , ▁ 2 0 1 0 . ▁López ▁left ▁the ▁field ▁to ▁a ▁standing ▁ov ation ▁by ▁National s ▁fans . ▁The ▁National s ▁sent ▁López ▁back ▁to ▁Sy rac use ▁on ▁July ▁ 2 0 , ▁ 2 0 1 6 , ▁to ▁make ▁room ▁on ▁their ▁ro ster ▁for ▁relief ▁pitch er ▁K oda ▁Glo ver , ▁who ▁made ▁his ▁major ▁league ▁debut ▁the ▁evening ▁after ▁L ope z ' s ▁debut . ▁He ▁was ▁re called ▁and ▁option ed ▁multiple ▁times ▁after ▁his ▁debut . ▁In ▁ 1 9 ▁starts ▁between ▁Harris burg ▁and ▁Sy rac use ▁he ▁compiled ▁a ▁ 5 - 7 ▁record ▁and ▁ 3 . 2 1 ▁E RA , ▁and ▁in ▁ 1 1 ▁games ▁( six ▁starts ) ▁for ▁the ▁National s , ▁he ▁was ▁ 5 - 3 ▁with ▁a ▁ 4 . 9 1 ▁E RA . ▁ ▁Chicago ▁White ▁So x ▁On ▁December ▁ 7 , ▁ 2 0 1 6 , ▁López ▁was ▁trad ed ▁with ▁Lucas ▁Gi ol ito ▁and ▁D ane ▁Dun ning ▁to ▁the ▁Chicago ▁White ▁So x ▁in ▁exchange ▁for ▁Adam ▁E aton . ▁ ▁López ▁began ▁ 2 0 1 7 ▁with ▁the ▁Charlotte ▁Kn ights ▁before ▁being ▁called ▁up ▁on