San Francisco 49ers: What to Expect from the Defense in 2015

The San Francisco 49ers have myriad question marks as they head into the summer. One of the questions that must be answered: How good will the pass rush and pass defense perform in the 2015 season?

A strong pass defense starts with a good, consistent pass rush. Putting pressure on the opposing quarterback will help a defensive backfield immensely.

The 49ers have lost Justin Smith and Ray McDonald, two key members of their defensive line. In prior seasons, Smith worked very well with Aldon Smith, as he was able to occupy multiple blockers, enabling Aldon to have fewer blockers to contend with.

Heading into the 2015...

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