Brandon Nimmo is having a great year. But it’s just the eighth-best among hitters in their age 25 season here in 2018. Currently, nine players have a fWAR on 4.0 or greater, a feat that hasn’t been accomplished since 1963. Two of those have reached or surpassed a mark of 7.5, which hasn’t been done since 1912.
Source: Craig Edwards, FanGraphs