McKinze Gaines

Gaines grew up in the Austin area where he played youth soccer for Lonestar Soccer Club. On August 12, 2017, Gaines made his professional debut against Jahn Regensburg in the DFB-Pokal. On July 8, 2019, Gaines signed with Sonnenhof Großaspach. Gaines joined Hannover 96 ahead of the 2020–21 season, starting with the team's reserve squad. He made his debut for the first team against SC Paderborn in the 2. Bundesliga. He left the club ahead of the 2021–22 season.

Austin FC

On July 14, 2021, Gaines began trialing with Major League Soccer club Austin FC, coming on as a substitute in the club's friendly against Tigres UANL. A couple weeks later, on July 30, Gaines officially joined Austin FC.

Charlotte FC

On December 14, 2021, Gaines was selected by Charlotte FC in the 2021 MLS Expansion Draft. He was released by Charlotte following their 2023 season.

Nashville SC

On December 14, 2023, Gaines' rights were traded to Nashville SC in exchange for their second round 2024 MLS SuperDraft pick.

Houston Dynamo

Gaines was again traded in 2024, moving to Houston Dynamo on April 23, 2024, in exchange for $75,000 in General Allocation Money. On November 7, 2024, his contract expired with Houston following their 2024 season.

New Mexico United

On January 27, 2025 New Mexico United announced they had signed Gaines for the 2025 USL Championship season.

Las Vegas Lights

McKinze was transferred to USL Championship side Las Vegas Lights in…

As of match played August 26, 2021