Jameson Taillon of the Pirates pitches a one-hitter in defeating the Reds, 5 – 0. The only hit he allows is a single by his opponent, Tyler Mahle, in the 3rd.

On April 8, 2018 – Jameson Taillon of the Pirates pitches a one-hitter in defeating the Reds, 5 – 0. The only hit he allows is a single by his opponent, Tyler Mahle, in the 3rd.

Source
Baseball Reference April 8