San Francisco 49ers receiver Demarcus Robinson has been suspended for three games by the NFL for violating the league's substance abuse policy, coach Kyle Shanahan said in an interview with KNBR on Wednesday.

Robinson recently pleaded no contest to a misdemeanor DUI charge stemming from a November arrest. He was sentenced to 36 months of probation and ordered to pay a $390 fine.

"You can always appeal it, so we'll hope for the best on that," Shanahan said . "But [three weeks] is what we're planning for."

Robinson, 30, was initially charged with one misdemeanor count of driving under the influence of alcohol in January . At the time of his arrest, Robinson was stopped by law enforcement after he was allegedly driving over 100 mph. Upon questioning by authorities, Robinson i

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