DUBLIN -- The Minnesota Vikings ' patchwork offensive line suffered two more losses in Sunday's 24-21 loss to the Pittsburgh Steelers , leaving a series of questions as the team continues its 10-day, two-country international road trip.

Center Ryan Kelly did not play in the second half because of a concussion, his second this season and at least the fifth of his NFL career, and right tackle Brian O'Neill departed with a knee injury.

The Vikings were already playing without left guard Donovan Jackson , who had surgery last week on his left wrist. In the process, the Steelers sacked Vikings quarterback Carson Wentz six times, hit him a total of 14 times and pressured him at a rate of 32%. Two of his passes were batted at the line of scrimmage and intercepted, and he also commit

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