Even though he did not get any playing time in what was a disappointing afternoon for the team, making the 16 represented a massive stride for the 18-year-old midfielder who said the occasion was a great experience for him.
"It was, for me it was it was great," beamed Mark. "I really enjoyed it, but for the team it wasn't the best.
"I think they were a bit unlucky - for the first 20 minutes the lads played very well. It is just the way it goes, I suppose. On another day Teddy would have put away the chances he got.
"For me, I was delighted to get on the bench. It's what I've hoped for and working for since I came here," he added, before claiming the nerves did not really come into play.
"To be fair, I thought I would have been really nervous, but I was okay. I reckon if I had have got a shout to come on I would have been all over the place - I probably would have fainted.
"It has given me the hunger for more and I hope to be in the squad again soon - that's all I'm looking for. You never know, I'll see what happens."
Mark Yeates is hoping to sample more of the same after making the bench for our trip to Middlesbrough last weekend.