San Francisco 49ers places McKinnon on injured reserve

McKinnon tore the anterior cruciate ligament in his right knee on Saturday during a non-contact drill in practice.

The San Francisco 49ers officially placed running back Jerick McKinnon on injured reserve on Monday.

McKinnon tore the anterior cruciate ligament in his right knee on Saturday during a non-contact drill in practice.

McKinnon, 26, played four seasons with the Vikings before signing a four-year, $30 million deal with the 49ers in the offseason. He rushed for a career-best 570 yards last season.

San Francisco also announced it signed offensive lineman Matt Tobin and safety Antone Exum Jr. to one-year contracts, placed safety Marcell Harris on injured reserve and signed offensive lineman Zach Golditch to the practice squad.

Tobin has played 57 games (21 starts) in five NFL seasons with the Philadelphia Eagles (2013-16) and Seattle Seahawks (2017). He was recently released by the New England Patriots.

Exum was in training camp with the 49ers and released on Saturday. He has played in 28 NFL games (three starts) with the Minnesota Vikings (2014-15) and 49ers (2017).

Harris injured a hamstring in mid-August. The rookie is a sixth-round draft choice out of Florida.

Golditch was an undrafted free agent who was in training camp with the Los Angeles Chargers before being released. In 2012, Golditch survived after being shot in the neck in the movie-theatre shooting in Aurora, Colo., in which 12 people died and 70 were injured.

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