Irwin can't believe Giggs is still terrorising top-flight defences, and recalls when the young Welshman first starting knocking on the first-team door.
"It's incredible," Irwin told manutd.com. "We all knew about him. He was like lightning, he was like the wind, and had such great ability and skill.
"The best thing about him was that he could do his defensive duties as well. He never shirked that responsibility and still doesn't. He played on the left wing in front of me for 10 years and it's incredible he's still as sharp and as driven as he is."