Answered January 12th, 2020

Mike Piazza played the most seasons by a catcher with a batting average of .300 or above with 15+ home runs, with 9 seasons.

which catcher had the most seasons with at least.300 avg and 15 hr
Interpreted as:
Which catcher had the most seasons with at least.300 avg and 15 or more hr?

See Trending MLB Searches