Both veterans had been designated for assignment on the final day of August.
Tejada was in his first season with the Giants and was brought in to add some punch to the lineup, but the former AL MVP during his days across the bay in Oakland was batting a mere .239 with four homers and 26 runs batted in. He also missed 25 games because of a lower abdominal strain and had started just four of the club's last 14 games since being reinstated from the disabled list on August 16. He signed a one-year deal with the Giants last November.
Rowand, who is under contract with the Giants through 2012 and due $12 million next year, had also struggled mightily in San Francisco's inept offense. He had just four hits in his last 40 at-bats and a .205 batting average in his last 34 contests. In 108 games this season, his fourth with the club, he was batting just .233 with four homers and 21 runs batted in.