Late in the fourth-round fixture- with the Bees 4-0 down- Luiz put in a challenge that wouldn’t have looked out of place in a UFC bout, concussing Reeves and somehow escaping a red card in the process.
The youngster, brought on by Uwe Rosler in the 73rd minute, won’t have a more eventful ten-minute substitute appearance in rest of his career.
Reeves recalls the incident remarkably well and such was the speed of his recovery, he remembers taking to the field the next day in a reserve match.
“It was a challenge Conor McGregor would have been proud of,” he said.
“I remember it clearly. I was on the bench for the game and the gaffer had told me I’d be coming on.
“It was a good experience for myself to watch first-class players first hand, to witness how they move around and how they play.
“I think I managed about ten minutes before getting absolutely wiped out.
“It was just one of those things really, it was all fine,” he continued. “I take it as a compliment that he wanted to wipe me out, look at it that way!
“I think I played the next day for the reserves because I came back in and I was alright.”
Reeves, 19 at the time of the incident, is now at AFC Wimbledon and has developed into one of League One’s most promising playmakers.
Luiz, back in English football for his second spell at Chelsea, made a well-publicised visit to the Brentford dressing-room after the game four years ago- to apologise to the midfielder.
Reeves recounts the Brazilian’s apology, while underlining that there is no hint of bad blood between the two of them.
“I watched the rest of the game on the bench after I’d sorted myself out,” he said.
“He came into the dressing-room, I don’t think he spoke much English at the time.
“He just pointed to his shoulder, said sorry and handed me his shirt. That was it really and he walked back out.
“I hold no grudge at all. It’s just one of those things, really. It was good for me, a good learning curve.”
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