Dhameystir weedha soo socota: Ka dib markii uu ku dhibtooday xiddiga ugu dhow ee Cubs José Veras horaantii xilli ciyaareedkii 2014, Rondón waxaa loo magacaabay xiddiga cusub ee Cubs. wuxuu lahaa xili ciyaareedkii 2014 Wuxuu kasbaday laba badbaadin 2015 National League Division Series oo ka dhan ah St. Louis Cardinals, oo ay kujirto badbaadin ciyaarta 4-aad ee taxanaha. Kadib markii uu ku soo biiray Aroldis Chapman dabayaaqadii bishii Luulyo 2016, Rondon waxaa loo wareejiyay doorka dejinta ee bullpen. Rondon wuxuu ku dhameystay 2016 rikoor 2-3 iyo ERA 3.53 54 kulan. Cubs ayaa ku guuleystay
Horyaalka aduunka 2016 ee Cleveland Indians, oo soo afjaray 108 sano oo abaar ah oo Cubs ah. Waxa uu ahaa mid aan la soo bandhigin wuxuuna noqday ciyaartoy xor ah 1-dii Diseembar, 2017.