What player underwent season-ending arthroscopic surgery in August 2018?

The player who underwent season-ending arthroscopic surgery in August 2018 was Jacoby Ellsbury.

Ellsbury was a New York Yankees outfielder who had not appeared in a major-league game during the 2018 season because of a series of physical problems. On August 6, 2018, he had arthroscopic surgery on his left hip to repair a torn labrum. Doctors expected recovery to take about six months, effectively ending his season.

The hip problem was connected to a broader chain of leg issues that began with an oblique injury during spring training. Ellsbury also dealt with plantar fasciitis and back and sacroiliac-joint problems during the year. Yankees manager Aaron Boone said the club had tried other approaches before turning to surgery.

The operation was especially notable because Ellsbury was in the middle of a seven-year, $153 million contract signed with New York before the 2014 season. He had previously been an important player for the Boston Red Sox, including their 2013 World Series championship team.