Zack Greinke made his Houston Astros debut on Tuesday night.

Over six innings against the Colorado Rockies, he allowed seven hits and five runs. He struck out two batters and walked the same number. It marked the first time in almost a year that Greinke walked as many as he struck out in a start.

The Astros put 11 runs on the board in the start. The offense put runs on the board in the second, third, fourth, and fifth innings while Greinke was in the game.

"Yeah, it's kind of boring. And just trying to stay loose, staying focused [when] not having anything to do," he said.

Greinke is pitching in the American League for the first time since 2012.