Question: What nationality was the professional baseball pitcher who was in the 111th edition of Major League Baseball's championship series
Sentence (from "2015 World Series"): The 2015 World Series was the 111th edition of Major League Baseball's championship series, a best-of-seven playoff between the National League (NL) champion New York Mets and the American League (AL) champion Kansas City Royals.
Relevant evidence: Yes