Broncos vs. 49ers: The good, bad and ugly from Week 2 of the preseason

SANTA CLARA, CA - AUGUST 19: Paxton Lynch #12 of the Denver Broncos looks to pass the ball against the San Francisco 49ers at Levi's Stadium on August 19, 2017 in Santa Clara, California. (Photo by Ezra Shaw/Getty Images)
SANTA CLARA, CA - AUGUST 19: Paxton Lynch #12 of the Denver Broncos looks to pass the ball against the San Francisco 49ers at Levi's Stadium on August 19, 2017 in Santa Clara, California. (Photo by Ezra Shaw/Getty Images) /
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SANTA CLARA, CA – AUGUST 19: Shelby Harris #96 of the Denver Broncos is tacked by Joe Staley #74 of the San Francisco 49ers after Harris recovered a fumble and was running back with the ball at Levi’s Stadium on August 19, 2017 in Santa Clara, California. (Photo by Ezra Shaw/Getty Images)
SANTA CLARA, CA – AUGUST 19: Shelby Harris #96 of the Denver Broncos is tacked by Joe Staley #74 of the San Francisco 49ers after Harris recovered a fumble and was running back with the ball at Levi’s Stadium on August 19, 2017 in Santa Clara, California. (Photo by Ezra Shaw/Getty Images) /

The Bad

Running the ball was a key 49ers strength in Week 1 of the preseason, as the Niners finished their game in Kansas City with 188 rushing yards on 36 attempts.

This wasn’t the case versus the Broncos.

San Francisco finished the night with a mere 37 yards on 19 carries — an average of just 1.9 yards per attempt.

No. 1 running back Carlos Hyde managed just 26 yards on eight attempts. And neither of his presumed backups, Joe Williams and Matt Breida, made much better of their opportunities.

San Francisco 49ers
San Francisco 49ers /

San Francisco 49ers

The Run Defense

It’s a bit unfair to label the Niners’ run defense as bad, but it’s impossible to overlook the 146 yards allowed to Denver’s ground game.

Most of these big gains came in the second half and against the majority of San Francisco’s backups and third stringers. And it wasn’t as if the 49ers offense gave the defense a good enough chance to rest.

Still, the Broncos were able to pull of long runs down the stretch, including a 20-yard touchdown run by Denver running back Juwaun Thompson in the fourth quarter.

It’s something to watch as the preseason moves along, but defensive coordinator Robert Saleh has some work to do.

Run Blocking

While the 49ers offensive line was pretty good at pass protection, this group was completely opposite in support of the run.

As noted earlier, San Francisco’s runners couldn’t get much of anything going en route to a mere 37 yards on 19 carries.

Most of this doesn’t fall on the tailbacks, though, as there were few lanes across the O-line to exploit.

Remember, this was a problem for the 49ers last year. Football Outsiders ranked the Niners O-line dead last in run support in 2016, and there doesn’t appear to be too much an improvement heading into this season.