Conversation so far:
What happened to Nolan Ryan in 1965?
Nolan Ryan was drafted by the New York Mets in the 12th round of the 1965 Major League Baseball draft, with the 226th overall pick.
What round was Nolan Ryan drafted in?
12th round.
What did Nolan Ryan do after getting drafted?
Nolan Ryan signed with the Mets and immediately pitched for the Marion Mets in the Appalachian League.
What did Nolan Ryan's time with the Marion Mets lead to?
Nolan Ryan had 307 strikeouts in 202 minor league innings in 1966, earning a late season call-up to the New York Mets.

Question: What did this mean
Self-contained rewrite: What did Nolan Ryan getting a call-up to the New York Mets mean?