A week after struggling in Houston's blowout loss to the Miami Dolphins, safety Rahim Moore was a healthy scratch for the Texans.
Andre Hal started at free safety in place of Moore in Sunday's 20-6 win over the Tennessee Titans, opposite Quintin Demps.
"With this game, we felt like that was the best combination of safeties," O'Brien said, per the Houston Chronicle. "That's what we were doing."
Moore signed a 3-year, $12-million deal with the Texans as a free agent last March.
Hal finished the game with two tackles, but contributed to a defensive effort that limited the Titans to a pair of field goals.
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