In 2018, the Boston Red Sox rolled to a 108-54 record and won the World Series. After a season like that, keeping the roster intact is typically difficult but ideal.
With that being said, let’s compare the 2019 Opening Day roster to the roster the Red Sox began 2018 with.
Catchers:
2019: Christian Vazquez, Blake Swihart
In 2018, the Red Sox kept three catchers in the majors all year. Christian Vazquez got hurt early in the year and missed a big chunk of time, which left Sandy Leon to do the majority of the catching during that time.