By Nick Selbe The 25-year-old shined as a rookie in 2021 and will be a key member of Boston’s pitching staff for years to come. View the original article to see embedded media. Less than a year and a half ago, Garrett Whitlock was picked up by the Red Sox after being left unprotected by the Yankees in the Rule 5 draft. Now, he’s secured himself a significant contract extension that will keep him in Boston for years to come. Whitlock and the Red Sox agreed to a four-year contract extension that includes two club options for the 2027 and ’28 seasons. According to Jason Mastrodonato of the Boston…