CLEVELAND—Browns quarterback Baker Mayfield will sit out the season finale against Cincinnati so he can undergo shoulder surgery. Mayfield, who has played with a torn labrum and fracture in his non-throwing shoulder most of the season, was sacked nine times in Monday night’s loss to the Pittsburgh Steelers. Afterward, he said he would consider not playing against the AFC North champion Bengals. Coach Kevin Stefanski began his news conference by announcing that Mayfield and the team decided that the best option for him was to get the operation now so he has more time to recover ahead of next season. “Obviously frustrating for him, but we felt this was the best thing for him right now,” Stefanski said. The surgery is still being scheduled, Stefanski said. Stefanski said he trusted the information he got from the team’s medical staff all season in continuing to play Mayfield, who struggled with inaccuracy …