The Houston Astros will start Lance McCullers Jr. in Game 4.

McCullers had a 2.69 ERA in his first 15 starts of the season but a back problem and arm fatigue limited him to just six starts in the second half and an 8.23 ERA.

"I think that's the unknown," said Astros manager A.J. Hinch when asked which version of McCullers will take the mound. "He's a really good pitcher. He's got really electrifying stuff, some of the best stuff in the big leagues."

Houston decided not to bring back Dallas Keuchel on three days' rest for Game 4, which would have also allowed him to pitch in Game 7.

McCullers is known for his curveball.