Pittsburgh Pirates outfielder Tommy Pham is having one of the most unlikely mid-season turnarounds in MLB. After June 19, Pham was batting just .194/.278/.219 with a 41 wRC+. He was striking out 26.7% of the time, and the only positive was his 10.2% walk rate. His 41 wRC+ was worse than some former Pirates pitchers.
However, after a change with his vision prescription to assist with a degenerative eye condition, Pham is hitting .415/.457/.489 with a 215 wRC+. It’s a small sample size of only 46 plate appearances, but Pham is (literally) seeing the ball a lot better.