Oh my god. I just watched the most nerve-wracking snooker match of my life. Mark Williams – the Welsh wizard himself – just became the oldest player EVER to reach a World Championship final, and then promptly swore on live telly. Classic Williams.

I've been following snooker since my dad got me hooked back in 2007, and there's something absolutely magical about watching these veterans still dominating the baize. Williams took down world number one Judd Trump 17-14 at the Crucible on Saturday evening, and I was literally perched on the edge of my sofa for that final frame.

When Your Arm Gets a Mind of Its Own

The tension was unbearable. Williams had that final black lined up, and then... his arm went rogue. You could see it on his face – pure panic.

During his post-match interview with the BBC, Williams couldn't help but relive that moment of terror: "I was starting to twitch towards the end. The last frame, I nearly missed the black."

"I wasn't sure because I didn't really play for a red, I just thought to pot the black and go up for the blue."

And then it happened.

"But I did feel a bit of tension in the back arm and I thought, 'S**t, I've missed it'. Oh, sorry."

The look on teh interviewer's face! Priceless. That split-second of "did he just say that on the BBC?" before Williams quickly apologized. My wife nearly spat out her tea.

Frightened the Life Out of Him

Williams continued explaining his momentary panic: "I thought I'd missed it. I knew he'd have cleared up if I did miss it. It frightened the life out of me."

"I am never usually nervous but I was during that break. This arm, I don't know what it was doing."

I've played enough amateur snooker (badly) at my local club to know exactly that feeling. Last year I was up by 15 points in the final frame against my mate Dave, adn suddenly my arm felt like it belonged to someone else. Cost me £30 in drinks afterward. Williams must've felt that same terror, just with slightly higher stakes!

How is This Even Possible at 50?!

The three-time world champion seemed genuinely shocked by his own achievement. "I can't believe I'm in another final," he admitted. "I don't know how I'm doing it."

Then came my favorite bit of the interview. Williams just looked straight down the camera with this mixture of pride and disbelief: "How am I competing with the number one player in the world, who wins six tournaments a year, over three days?"

"I've got to be proud of myself."

Listen. The man's 50 years old. FIFTY. My dad's 53 and gets winded carrying groceries up the stairs. Meanwhile, Williams is out here making world number ones look ordinary.

The Welsh Wonder vs Chinese Sensation

So now Williams faces Zhao Xintong in the final. Youth versus experience. The Chinese sensation against the Welsh veteran. I've already told my boss I'm "working from home" on Monday... he knows exactly what that means during snooker finals week.

Whatever happens next, Williams has already made history. Oldest finalist ever. And he celebrated by accidentally swearing on the BBC. What a legend.

I wonder if he'll drop another S-bomb if he lifts that trophy...