Tom Pelissero of NFL Network reports that Alexander will undergo arthroscopic surgery for the small tear in his lateral meniscus. The surgery isn't necessarily season-ending, should the Vikings advance, but it will make the cornerback unavailable for this weekend, at least.
Alexander consulted with doctors in an effort to find a way to avoid surgery, but those efforts fell short.
Minnesota is also without cornerback Mike Hughes, who was placed on injured reserve on January 3.
The 49ers are currently seven-point favorites over the Vikings.
More San Francisco 49ers News
-
49ers set for Kirk Cousins rematch after Vikings-Raiders trade
Quarterback Kirk Cousins will get another shot at the San Francisco 49ers. After losing to the Bay Area team as a member of the Las Vegas Raiders on Sunday, Cousins is reportedly headed back to the Minnesota Vikings, setting up another matchup against San Francisco in Week... -
49ers reportedly received call from Vikings about Mac Jones
According to Dianna Russini, the Minnesota Vikings have spent the day calling around the NFL to inquire about potentially available quarterbacks. One of those calls went to the San Francisco 49ers, with Minnesota expressing interest in Mac Jones. As expected, it would take a... -
49ers vs. Raiders injury report: Christian McCaffrey returns to practice, others remain sidelined
The San Francisco 49ers are preparing for their Week 9 contest against the Las Vegas Raiders on Sunday at Levi's Stadium in Santa Clara, California. Running back Christian McCaffrey returned to practice Thursday after missing Wednesday's on-field session. He suffered a mild... -
49ers vs. Cowboys injury report: Deebo Samuel returns; 6 players miss practice
The San Francisco 49ers are preparing for their Week 10 contest against the Dallas Cowboys on Sunday at AT&T Stadium in Arlington, Texas. Wednesday was wide receiver Keenan Allen's first practice since being traded from the Indianapolis Colts to the 49ers. Keenan Allen...