49ers RB Jerick McKinnon injures knee in practice, MRI ordered

San Francisco 49ers running back Jerick McKinnon (28) is brought down against the Dallas Cowboys during the first quarter at Levi's Stadium.Photo: Kelley L Cox-USA TODAY Sports

The 49ers are holding their breath after running back Jerick McKinnon injured his right knee during Sunday’s practice.

The injury occurred during team drills. According to NBC Sports Bay Area, McKinnon was seen grabbing the back of his right knee.

San Francisco said McKinnon will need an MRI.

McKinnon is expected to shoulder the ground game after signing a four-year, $30-million contract in March. With Minnesota last season, McKinnon rushed for 530 yards and three touchdowns.

The top backup running back, Matt Breida suffered a shoulder injury in San Francisco’s preseason opener against the Cowboys.