Heasley (0-1) was lit up in his MLB debut Friday, allowing four earned runs over four innings in a loss to the Mariners. He gave up six hits, struck out five and walked none in the contest.
Heasley got the chance to make his big-league debut Friday after Brady Singer was put on the 10-day injured list for an unspecified reason. The 24-year-old gave up all four runs on a pair of homers by Jared Kelenic. The prized outfielder got to him for a two-run blast in the second and another in the fourth to give the Mariners a comfortable four-run cushion. Heasley made the jump from Double-A Northwest Arkansas to make the start, and it remains to be seen if he will pitch for the big-league club again in 2021.