[1] Growing up just in East Garfield Park only about 15 minutes from the United Center, he describes himself as an enthusiastic supporter of the Chicago Bulls in youth.

[3] After going undrafted in the 2015 NBA draft, McKinnie started his career with the East Side Pirates[5] in Luxembourg's semi-professional second division, where he became the go-to scorer, averaging 26 points per game.

He helped lead the Rayos to the regular-season title and the final series before falling four games to two against the Náuticos de Mazatlán.

[8] In September 2016, McKinnie paid 175 dollars for a tryout with the Windy City Bulls of the NBA G League.

[11] He made his NBA debut on October 19, 2017, playing in a single minute in their 117–100 win over the Chicago Bulls.

During his rookie season, he received multiple assignments to Raptors 905, Toronto's NBA G League affiliate.

[29] On November 4, 2022, McKinnie was named to the opening night roster for the Mexico City Capitanes.

[30] On September 21, 2023, McKinnie signed with Dinamo Banco di Sardegna Sassari of the Lega Basket Serie A.

[31] In June 2024, McKinnie joined to Busan KCC Egis for 2024 Basketball Champions League Asia.

[35] Source:[36] He is the son of Elisa Bryant and Alfonzo McKinnie Sr.[2] In 2018, during his first stop in Chicago with the Warriors, he signed papers to buy his mother a house, and introduced his parents at the Warriors team dinner after he helped Golden State blow out the Bulls.