Severino agreed to new Yankees deal before things could get ugly

TAMPA — Luis Severino’s mother wanted to know if her son won an arbitration hearing Friday. “She called me and said, ‘What happened? You won?’ ” Severino recalled of his mother, Matilde, calling from the Dominican Republic. “I said, ‘No, but I got $40 million,’ and she said, ‘That’s more than $5 million.’’ With Severino’s agents…