For the 49ers their health has become a greater concern than their preseason performance. They just need to make sure they have enough healthy bodies to keep their key starters out of harm's way. More than 20 players missed their preseason opener vs. the Denver Broncos with injuries, and that number could rise Saturday when they face the Raiders.

The second preseason game versus the Las Vegas Raiders was more entertaining for the San Francisco 49ers than the first. Part of that is because the starters got a bit of action, but it's also because the 49ers had some players stand out.

Bitter rivals clash as the San Francisco 49ers and the Las Vegas Raiders go head-to-head in Week 2 of the NFL preseason today.

The San Francisco 49ers and the Las Vegas Raiders face off in Week 2 of the NFL preseason today. Here's where to watch and start time.

Raiders rookie Ashton Jeanty proved he could deliver hits and absorb them at the NFL level. He rushed for a bruising 33 yards and a touchdown on seven carries in Las Vegas’ 22-19 preseason loss to the San Francisco 49ers on Saturday.

Shedrick Jackson, who is the grand-nephew of the legendary Bo Jackson, tied for the team lead in receptions during the Las Vegas Raiders' 22-19 loss to the San Francisco 49ers in Saturday's preseason game. Jackson finished with three catches for 28 yards, while Raheem Mostert posted three catches for 16 yards.

Raiders head coach Pete Carroll has high praise for this crucial acquisition from the offseason after the loss to the 49ers.