Feb 1, 2020 - Sports

How the 49ers offense deploys its zone-running scheme

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Table: Andrew Witherspoon/Axios

Kyle Shanahan uses the same zone-running scheme that his father, Mike, used to lead the Broncos to back-to-back Super Bowls in the late 1990s.

Zone blocking, explained: Offensive linemen block a space instead of a person. This requires mobility (hence why San Francisco has the NFL's lightest O-line) and running backs who can get through holes quickly, rather than dance in the backfield à la Le'Veon Bell.

  • "For a lot of players, that approach requires unlearning years of what they've been taught," writes The Ringer's Danny Heifetz. "If less-heralded running backs pick up the system, they can earn the job — even if they've previously been cut six times." (See: Raheem Mostert.)

What they're saying: Future Hall of Fame LT Joe Thomas said Shanahan's scheme was his favorite offense he ever played in.

"It was like a computer program where everything was dichotomous; it was either a zero or a one and you knew exactly what you had to do on every single play and why."

On defense... The Chiefs have one of the worst run defenses in the NFL. Their best bet at disrupting San Francisco's attack is 311 pound DT Chris Jones, who will try to wreak havoc on the interior against an O-line built for speed not brawn.

The bottom line: The marquee matchup — Mahomes vs. the 49ers — may not end up being the decisive one, as the action on the other side of the ball reflects a bigger point of differentiation between the two teams.

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Coronavirus dashboard

Illustration: Sarah Grillo/Axios

  1. Global: Total confirmed cases as of 2 p.m. ET: 5,929,312 — Total deaths: 357,781 — Total recoveries — 2,385,926Map.
  2. U.S.: Total confirmed cases as of 2 p.m. ET: 1,709,996 — Total deaths: 101,002 — Total recoveries: 391,508 — Total tested: 15,192,481Map.
  3. States: New York to allow private businesses to deny entry to customers without masks.
  4. Public health: Louisiana Sen. Cassidy wants more frequent testing of nursing home workers.
  5. Congress: Pelosi slams McConnell on stimulus delay — Sen. Tim Kaine and wife test positive for coronavirus antibodies.
  6. Business: Louisiana senator says young people are key to reopening the economy —U.S. GDP drop revised lower to 5% in the first quarter.
  7. What should I do? When you can be around others after contracting the coronavirus — Traveling, asthma, dishes, disinfectants and being contagiousMasks, lending books and self-isolatingExercise, laundry, what counts as soap — Pets, moving and personal healthAnswers about the virus from Axios expertsWhat to know about social distancingHow to minimize your risk.
  8. Other resources: CDC on how to avoid the virus, what to do if you get it, the right mask to wear.

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Updated 1 hour ago - Politics & Policy

Twitter fact-checks Chinese official's claims that coronavirus originated in U.S.

Chinese Foreign Ministry spokesman Zhao Lijian. Photo: Greg Baker/AFP via Getty Images

Twitter slapped a fact-check label on a pair of months-old tweets from a Chinese government spokesperson that falsely suggested that the coronavirus originated in the U.S. and was brought to Wuhan by the U.S. military, directing users to "get the facts about COVID-19."

Why it matters: The labels were added after criticism that Twitter had fact-checked tweets from President Trump about mail-in voting, but not other false claims from Chinese Communist Party officials and other U.S. adversaries.

Podcast: Trump vs. Twitter, round two

President Trump is escalating his response to Twitter’s fact check of his recent tweets about mail-in voting, issuing an executive order that's designed to begin limiting social media's liability protections. Dan digs in with Axios' Margaret Harding McGill.

Go deeper: Twitter vs. Trump... vs. Twitter

1 hour ago - Politics & Policy