Dee ihe ga-aga n'ihu na paragraf a - Davis mere egwuregwu mbụ ya na 21 Eprel 1981 mgbe ọ dị afọ 24, wee bụrụ onye na-eburu Cubs na-amalite dị ka rookie. N'afọ ndị mbụ nke ọrụ ya, Davis gosipụtara nkwa na mmebi iwu wee bụrụ onye ọkacha mmasị n'etiti ndị Cubs. N'oge nke abụọ ya, n'afọ 1983, o setịpụrụ ihe ga-abụ ọkwa kachasị elu na egwuregwu 151 a na-egwu, nkezi batting nke.271 na 24 home runs. Davis nwekwara 84 RBI n'otu oge ahụ. Na 1984, o setịpụrụ ọrụ dị elu na 94 RBI ma nweta nhọrọ mbụ ya na All-Star, ka ndị Cubs meriri aha National League Eastern Division, aha mbụ ha n'ụdị ọ bụla kemgbe. N'otu oge ọ na-apụta n'oge ọ na-arụ ọrụ, Davis kụrụ.389 na okpukpu abụọ abụọ, 2 home runs, 6 RBI na.833 slugging percent na 1984 National League Championship Series
ka ndị San Diego Padres meriri ndị Cubs n'asọmpi egwuregwu ise.