Smith will undergo an MRI on his elbow after he felt something during Monday's spring game, Alex Pavlovic of CSN Bay Area reports.

This isn't good news for Smith, who was only making his second appearance back after being sidelined for much of spring with elbow inflammation. Given the time of spring, it seems likely the southpaw won't be ready for Opening Day. His status will be updated after the MRI results are known.

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