Jax (2-1) won Thursday's 5-3 game against Houston, allowing one run on three hits and a walk in 5.1 innings. He failed to record a strikeout.
Jax stymied a potent Astros lineup through five innings but ran into trouble in the sixth by permitting a Jason Castro home run and a double while inducing only one out before being removed. The rookie right-hander has now allowed a single run in three consecutive appearances, lowering his ERA from 8.66 to 5.63, though he sports a low 6.2 K/9.