The Astros are not ready to activate Josh Fields from the disabled list and have no obvious candidates for demotion, the Houston Chronicle reports.

Right-hander Will Harris would be the logical option to lose his roster spot in the event of a Fields activation, but the right-hander has surrendered just one hit in five scoreless innings while striking out five and walking none in three appearances.

"Will Harris has been one of our best relievers," manager A.J. Hinch said. "He’s done very well in his opportunity and we like what he’s done."

The Astros are also looking to give Fields a few more opportunites to get comfortable in rehab games.

"Little bit of both," Hinch said. "You want to make sure he’s fully comfortable and his pitches both have quality and comfort for him. I think it could happen quickly. It also could be a couple more outings."