Antonio Brown‘s popping off at Tim Walz over his athletic background — saying he’s not a real football coach … and, he couldn’t take AB on one-on-one.

The former NFL star spoke at an Donald Trump event in Pennsylvania Saturday … and, he took aim at Walz’s time as a high school football coach — kicking off by questioning his time on the sidelines at Mankato West High School.

Brown — who calls Walz “Tampon Tim,” seemingly in reference to Walz signing a bill for all menstruating students to have access period products in public schools, regardless of gender identity — says TW could never guard him.

Antonio adds business will be booming if people vote for Trump instead of Harris and Walz. AB also brought out Le’Veon Bell — his Steelers teammate — onstage … who showed love for DJT with a Trump shirt.

Of course, the people of West Pennsylvania still have a lot of love for Brown … who started out his career with the Pittsburgh Steelers.

After nine years in the Steel City, Brown left for the Raiders — though he never played a regular season game with them. He played for the Patriots and Buccaneers before ending his career.

Brown’s pretty outspoken online … talking about celebs like Travis Kelce, Taylor Swift, Morgan Wallen, Caitlin Clark and more online in the years since his retirement.