MINNEAPOLIS — Fernando Romero’s major league debut for Minnesota carried the extra weight of a Twins team that won only once in its previous 12 games.

No pressure, kid.

Well, he sure didn’t appear to feel any.

Romero kept Toronto scoreless while pitching into the sixth inning, giving the Twins a badly needed boost in a 4-0 victory over the Blue Jays on Wednesday.

“I can be here. I feel comfortable. I’ve got no excuses. I’m ready to work. I’m ready to compete,” Romero said, dismissing several questions from reporters about whether he felt first-start jitters.

Eddie Rosario homered for the Twins, who won for only the second time in their last 13 games. Romero (1-0) was a big reason why, striking out five in 5 2/3 innings while giving up four hits and three walks. Four relievers preserved the shutout, allowing only two singles the rest of the way.

After four of nine games were wiped out by wintry conditions during their first homestand this year, the Twins finally enjoyed some ideal spring weather upon their return to Target Field. They won only two of six games, though, avoiding an even worse outcome were it not for the strong right arm of the 23-year-old Romero.

“His stuff is alive,” manager Paul Molitor said, “and he made a lot of hitters uncomfortable.”

With a fastball clocking in at 95 mph or higher, Romero deftly worked out of two-on, one-out situations in the second, fourth and fifth innings. He struck out Teoscar Hernandez on a caught-stealing double play to end the third, when first base umpire Phil Cuzzi ruled Hernandez’s swing was not checked.