Luis Severino isn’t the same person who last made a start here at Yankee Stadium. Since September 2019, Severino has been through major surgery, a bunch of nagging injuries and a journey to become a better, more sustainable pitcher. “And I have two more kids now too,” Severino said with a laugh Friday morning. After pitching just 27.2 innings over the last three seasons, Severino made his first start at the Stadium — since Sept. 22, 2019 — Saturday afternoon. It was a big moment for him personally, being back on the big stage after a long journey through injuries. It was also a big moment for …