49ers film room: Offense's opening drive vs.Vikings starting defense

49ers film room: Offense’s opening drive vs. Vikings starting defense

MINNEAPOLIS, MN - AUGUST 27: Pierre Garcon #15 of the San Francisco 49ers carries the ball against Trae Waynes #26 and Harrison Smith #22 the Minnesota Vikings during the first quarter in the preseason game on August 27, 2017 at U.S. Bank Stadium in Minneapolis, Minnesota. (Photo by Hannah Foslien/Getty Images) /

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MINNEAPOLIS, MN – AUGUST 27: Trae Waynes #26 of the Minnesota Vikings tackles Pierre Garcon #15 of the San Francisco 49ers during the second quarter in the preseason game on August 27, 2017 at U.S. Bank Stadium in Minneapolis, Minnesota. (Photo by Hannah Foslien/Getty Images) /

2nd-and-5 at SF 26

On second down, the 49ers line up with 12 personnel in a shotgun formation, and motion Hyde outside the numbers:

The motion causes confusion between the Vikings’ inside linebackers regarding the defenders’ responsibilities for Hyde and 49ers tight end Vance McDonald:

The linebackers eventually move to their respective positions, leaving a gaping hope in the middle of the field:

Shanahan calls his popular “Slant-Flat” concept, and quarterback Brian Hoyer quickly fires the ball to wide receiver Pierre Garçon

Garçon catches the pass and heads upfield for a 10-yard reception and a 49ers first down:

Motioning Hyde outside forces the #Vikings to vacate the middle of the field. Hoyer and Garcon take advantage. #49ers pic.twitter.com/iEtTIiFTQs
— Chris Wilson (@cgawilson) August 29, 2017