After missing the first two games of the season with a bad back, Lowry will again sit against San Antonio on Sunday night. Jason Friedman of Rockets.com tweeted that Lowry would not make the trip with the team and was still considered day-to-day.
Aaron Brooks will probably get a bigger share of the playing time, and Ish Smith could steal between 10-20 minutes of time as well as the Rockets don't have anyone else on the roster really capable of playing point guard.
The Rockets will also probably be without Brad Miller, who continues to battle an ankle injury. That will give Jordan Hill a chunk of playing time again behind Yao Ming and Luis Scola.