The fourth official held up the board — #10 in bright red, and #53 in green beneath it.
Izan glanced at the sideline, nodded once, and jogged toward the touchline as the ball settled in midfield after the goal.
The referee waited patiently to restart play, holding up the whistle and gesturing toward Izan.
The entire stadium — not just the Arsenal faithful but the Southampton fans too — rose to their feet.
Applause thundered through St. Mary's.
Some fans clapped with polite respect, others with sheer admiration.
Even a few Saints fans near the dugout leaned over the barriers, phones out, capturing the young Spaniard's final steps off the pitch.
There was admiration in the air — that rare silence between rival fans where awe levels all loyalties.
The commentator's voice softened with reverence.