Yorkshire paceman Jack Brooks had little sympathy for Northamptonshire after helping skittle his former club for just 94 at Headingley.
The 29-year-old left Wantage Road to sign for Yorkshire at the end of the 2012 season, and he insists his decision was justified after the home side took firm control of their County Championship Division One clash.
Brooks enjoyed the best day of his White Rose career, hitting an unbeaten 37 to lead Yorkshire to 459-9 declared before claiming impressive figures of 5-36.
The visitors will be asked to follow on 365 runs behind when play resumes on Tuesday, and Brooks admitted the day had made him feel better about leaving the club that gave him his county break.
"No matter what happens to them over the next few years I won't ever regret having moved up here," said Brooks, whose parents are Northamptonshire members and travelled up for the match.
"I think that justifies my decision - what has happened over the last few days - of how my cricket is going forward with this team.
"It's a great club to be part of at the minute.
"I'm enjoying my cricket at the minute, I enjoyed it at Northants, but I enjoy winning - if we can challenge for trophies then that's fantastic."
Brooks admitted he had probably delivered a stark warning to injury-hit Northamptonshire, who were promoted last year but were unable to land an overseas signing during the winter.
They scraped a draw in their season-opener against champions Durham last week, but after Monday's display they appear set for a season scrapping against relegation.
"It is going to be a tough year for them," Brooks added. "They are going to have to graft and work hard. I know they have a good work ethic and they play well as a unit.
"(Today) will be a bit of a wake-up call for those who haven't played in the top division.
"One session can cost you a game and that has shown there.
"We are the type of team that if we can stay on top we are not going to let teams off the hook."
Gary Ballance enhanced his claims for an England place with a superb 174, his highest first-class innings for Yorkshire.
"Gary's knock was near faultless," Brooks said. "It's still a reasonable deck to bat on if you bat properly. Gary showed the application. Good players can get runs on it.
"We all know he's a class player and last season's form was worthy of his Ashes tour.
"I think he needs to be given more of a go (in the Test team) to be honest with you.
"He's good enough and he's got the perfect game and mentality for Test cricket."