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He walked down the sidewalk, through the gate and the concourses and the aisle, unbothered, unnoticed.

Aaron Small was back in The Bronx last July, holding a ticket on the first base side, sitting inside Yankee Stadium for the first time since making the most recent of his five Old Timers’ Day appearances a dozen years earlier.

The former journeyman pitcher still stands out, standing 6-foot-5, now two decades removed from casting an 11-week spell on his unimaginable jaunt to 10-0. The fans once enraptured by Small surrounded him for hours, failing to spot the folk hero until he left his seat.

“Not a single person recognized me except when we were leaving the Stadium, people were going, ‘Look, it’s John Cena,’ ” Small said. “I get that all the time. … The friends of mine that were with me, they start doing the John Cena [face wave].’”