Sixto Sanchez, Miami Marlins' starting pitcher, will be out for the remainder of the season following an MRI on Monday that revealed a small tear to his right shoulder.The team hopes that the highly-regarded prospect will undergo arthroscopic surgery and be ready for spring training next season.After a promising debut season for Miami in 2020, Sanchez has had a disappointing year. As the Marlins advanced into the playoffs, Sanchez went 3-2 in seven appearances last year. He had a 3.46 ERA and 33 strikeouts in 39 innings. He made two playoff appearances.However, his return to spring training was delayed due to a visa issue and a false positive COVID-19 test.Sanchez stated that he didn't feel frustrated but that it was a strange feeling. Sanchez spoke via an interpreter. "That false negative ruined my momentum, but it's not too far behind. I can't pitch as many innings for the guys."Because of shoulder soreness, he did not play in Miami's regular season. Sanchez experienced a setback recently while increasing his velocity in a throwing programme.Don Mattingly, Miami manager, stated Monday that it was "awful news" for him and the entire organization. "It's obvious that we want to go conservative and hope we don't, but we do."Sanchez was acquired in the J.T. trade two years ago. Realmuto was traded to the Philadelphia Phillies.This report was contributed by The Associated Press.