Texas Rangers second baseman Rougned Odor looked like he was on the path to superstardom after a 2016 season in which, as a 22-year-old in his first full big league season, he slugged 33 bombs and hit .271. That performance led to an fWAR of 1.9, and he put up a similar 2.3 mark in 2015.

However, he became a below replacement level player last year, posting an fWAR of just -1.0. While he reached the 30-homer mark again, he had a terrible slash line of .209/.252/.397, and a wRC+ of 61. His strikeout rate has steadily gotten worse in his three big league seasons, from 16.8% to 21.4% to 24.9%. His contact rate has dropped from 83.2% to 75.4%, and his swinging strike rate has ballooned from 8.0% to 12.9%.

Odor is still young, but 2018 will be a key season for him to see if he can turn things around.