Lowrie, who has been out since the middle of July with a nerve injury in his right leg, went 0-for-4 at the plate as the designated hitter Friday in Corpus Christi's 5-0 loss. The defeat also knocked the Hooks out of the playoffs, ending their season.
Astros manager Tony DeFrancesco said Lowrie was still not quite ready to return, and is being sent to Class-A Advanced Lancaster, which is still alive in the playoffs.
"Some of the reports [say] his timing was off," DeFrancesco said of Lowrie's outing. "I know he had a rough time at the plate. He's headed to Lancaster today and hopefully he'll get there on time and get some at-bats today. Hopefully he'll be there through the weekend."
Lancaster is slated to play Saturday and Sunday night, and three more games Monday, Tuesday and Wednesday if necessary.
DeFrancesco said the plan is for Lowrie to play five innings in the field Saturday and that he wants to have Lowrie back in the lineup possibly as soon as next week.
"They want to get him some at-bats and it's time for him to go in the field and see if he can move around," DeFrancesco said. "Time is limited. They're running out of Minor League games. We're lucky we have him going out right now."