SAN FRANCISCO (AP) Giants right-hander Matt Cain has gone on the 15-day disabled list with irritation in his pitching elbow and received a cortisone injection to help it calm down.

San Francisco recalled rookie Chris Heston (11-7), who will pitch Sunday against St. Louis after getting a short break in the minors to rest. He last pitched for the Giants on Aug. 17 at St. Louis and is winless in his past four starts.

The move with Cain was made Friday and was retroactive to Wednesday. This marks his second stint on the DL this season after he began the year with an elbow injury and missed 79 games.

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