The San Francisco 49ers saw three players go down with injuries on Saturday. Here's what Kyle Shanahan said after the game.

San Francisco 49ers rookie running back Corey Kiner was carted off the field in Saturday’s preseason game between the Niners and the Las Vegas Raiders. He suffered what appeared to be an ankle injury on just his second carry of the game.

Kiner suffered a left high-ankle sprain in Saturday's preseason game versus Las Vegas, Eric Branch of the San Francisco Chronicle reports.

The injury-riddled 49ers do have some players worth watching in Saturday’s preseason visit to the Raiders after possible cameos by select starters.

Multiple preseason injuries created serious questions about San Francisco’s offensive line stability and backfield depth heading into Week 1.

Kiner was carted off the field during the second quarter of Saturday's preseason game against the Raiders due to a left leg injury, Jennifer Lee Chan of NBC Sports Bay Area reports.

Dominick Puni is believed to have injured his posterior cruciate ligament and could miss a few weeks, coach Kyle Shanahan said after Saturday's preseason game.

An undrafted rookie running back caught Kyle Shanahan's eye, and Marques Sigle's ascent at safety is putting pressure on two veterans.

The 49ers are banged up everywhere, but the situation at running back opens a door for undrafted rookie Corey Kiner.