"It's that time of year when you start getting a little fatigued and tired," Dominguez said. "I played a good amount of games and it will be nice to get more of a mental break and [it] also give you a physical break. It will be nice."
Dominguez, in his second full season as starter, is hitting .229 with 14 homers and 50 RBIs, but he's batting .250 with runners in scoring position and has a .270 on-base percentage because he's walked only 25 times in 496 plate appearances.
Astros manager Bo Porter said Dominguez needs to work on pitch selection.
"The biggest thing is on-base percentage and the ability to hit with men in scoring position," he said. "Matt Dominguez is a corner infielder, and to play that position, you have to profile as a guy that's going to drive in runs, and that's an area he can definitely improve."
Brian McTaggart is a reporter for MLB.com and writes an MLBlog, Tag's Lines. Follow @brianmctaggart on Twitter. This story was not subject to the approval of Major League Baseball or its clubs.