It has been a feature of Partick Thistle's season so far - a natural consequence of hoovering up discarded top-flight talent - that most weeks some young pup gets his chance at proving he does belong in the SPFL Premiership, having dropped a division to join Thistle.
This particular cast-off has been made captain of his new club. "It will be a good moment," said Welsh. "It's good the gaffer has made me captain and I'm looking forward to walking out against the former club that didn't have faith in me and thought I couldn't do this. I'm here to prove everyone wrong. People doubted me at that club and didn't trust me but I've shown that I'm enough and I'm here now."
The midfielder came through the ranks at Easter Road but failed to make a single first-team appearance before his departure in May 2012. The parting of the ways hurt; this was not a club, an employer, he was leaving. It was the team he had supported as a child and dreamed of playing for.
"I always believed in myself," he said. "I knew I was good enough. I could see some players playing who I thought I could do better than. But that's down to a manager's opinion. It's their choice and I wasn't given the chance; I'm past that."
His contribution was rewarded with a 12-month contract extension in August, and the faith manager Alan Archibald has shown in him has allowed in to put in the performances to justify that conviction. "It gives you the confidence to show what you can do if someone believes in you. The gaffer and Thistle have shown that so I'm just trying to reward them for doing that for me."
Tonight's visitors had been on a decent run before last weekend's humbling 3-0 defeat to Inverness Caledonian Thistle. New signing Abdellah Zoubir has found it tough to settle in to Scottish football, starting just one match since moving to Edinburgh on a season-long loan from FC Istres.
He has made an impression in training, though, at least with team-mate Lewis Stevenson. Sporting a fresh black eye, the combative midfielder said wryly: "Zoubir did it, of all folks who could have been responsible. He says he didn't mean it. The physical side of the game doesn't seem like a problem for him. Abdellah is something different to what we have; he has a different style and philosophy. You can get a bit frustrated when he's in your team but he can produce a bit of magic. He can go past people and you wonder how he did it. Hopefully he sticks around."
Stevenson is determined to prove last week's timid reverse was no more than a blip. "I don't know where that came from," he said. "It wasn't just the result; it was the performance too. It was so disappointing and we were all gutted. We know we can play better. I think we've been playing our best football in years and we want to get back to that."