Patrick said: "I wasn’t expecting too much as I haven’t been playing. I’ve been under the weather and pulled out last week. I came here yesterday thinking I’d play and see what happens. I didn’t feel any pressure because of that.
"I don’t think I’ve ever won a game in Scotland, but I’ve lost to Marcus Campbell and Anthony Hamilton 4-3. To get my first win, on the main table and against the defending champion. It can’t get much better than that.
"I’ll try to get another few wins and have a wee run. I want to try and get a bit of confidence ahead of the New Year and you never know what can happen."
Glasgow’s 31-time ranking event winner John Higgins also booked his place in the last 64 with a 4-2 win over Anthony Hamilton as he seeks to capture the Stephen Hendry Trophy for the first time.
World number three Trump eased to a 4-0 whitewash win over Sanderson Lam, former Scottish Open champion Mark Allen sealed his progression with a 4-1 win over Andy Lee, while Mark Williams beat Andres Petrov 4-1.