La Stella (hamstring) is likely to need a trip to the injured list, Kerry Crowley of The San Jose Mercury News reports.

La Stella left Sunday's game against the Padres with a strained left hamstring. If he does indeed land on the injured list, he'll be out until at least May 13. San Francisco's infield depth is getting tested early, with Mauricio Dubon and Wilmer Flores getting a short-term bump in playing time.

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