It was an impressive year for ERA in 2018, as MLB's combined 4.14 ERA was the lowest since league pitching recorded a 3.95 ERA in 2015. Just to give you an idea of how much pitching improved this year, all four of the pitchers that will be mentioned in this list finished in the top-10 in ERA among qualified pitchers, and only one of them had finished in the top-30 in 2017.Now normally "rising" and "ERA" are not something you want to hear in the same sentence. For the purposes of this article tho[...]