TORONTO — Red Sox rookie catcher Carlos Narváez went from fighting for a roster spot in spring training to blowing by his career high in innings caught.

Narváez ’s 926 innings behind the plate this season are 360 ⅔ innings more than he’s ever caught in one season in pro ball.

The 26-year-old, who Boston acquired from the Yankees in December, had appeared in just six major league games before this season. However, he’s become a leader not only of the pitching staff but in the clubhouse.

Manager Alex Cora was asked if he’s surprised a rookie with Narváez’s lack of big league reps was able to become a leader almost immediately.

“Yes and no,” Cora said. “When we traded for him, I had a conversation with Henry Blanco about him. He was his catcher in winter ball and he believed in him —

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