Elam, a third-year safety, injured the biceps during practice on Saturday reaching for a receiver who had run by him. He had an MRI Sunday. If the biceps are torn, this could possibly be a season-ending injury.
''I haven't heard a final word, but it wasn't very optimistic yesterday talking to the doctors (about) his biceps,'' Harbaugh said. ''I'm not real optimistic right now.''
Elam seemed to come to camp with a new purpose. He drew criticism from coaches after struggling throughout 2014. Elam came to camp in great shape and started off well.
''I'm sure it's very disappointing for him, and he told me that,'' Harbaugh said. ''He just had grown up a lot. He's very serious. He's in tremendous shape, and then he gets a fluke injury.''
Harbaugh also said linebacker Elvis Dumervil (Achilles tendinitis) should be back soon, but won't return until he's 100 percent. The coach also thinks top draft pick Breshad Perriman (sprained/bruised knee tendon) will be back soon.
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