Osweiler underwhelms in debut

It’s just one largely forgettable preseason game, but Houston’s Brock Osweiler hardly resembled a $72 million quarterback in Sunday’s 24-13 win over the 49ers.

Osweiler finished 4-of-7 passing for just 27 yards and was outplayed by fellow free-agent pickup Lamar Miller, the former Dolphins runner who plowed through the 49ers for 30 yards off four attempts.

Houston’s third series fizzled out when Osweiler again threw incomplete to Miller on a fourth-down try in 49ers territory.

It was frustrating to watch Osweiler throw well short of the sticks on a pair of third downs, but credit San Francisco’s sticky coverage for clamping down on Houston’s pass-catchers.

He was at his worst two plays later when Texans nose tackle Vince Wilfork pancaked Hyde, who fumbled the ball and could only watch as Houston pass rusher John Simon picked up the pigskin and raced 41 yards for the score.

Still, Kelly must be pleased with a 49ers ground game that went nuts on Houston over the first two quarters for 161 yards at 7.7 yards per rush.

Despite entering behind Garrett Celek, McDonald made good on reports of having his “best offseason” yet with the long touchdown grab and another chain-moving grab for 11 yards.

Notebook dump: San Francisco’s mobile rookie passer Jeff Driskel passed for just 20 yards off 12 attempts, but ran for 61.