Giants' Dan Uggla and Tyler Colvin designated for assignment
Uggla started four games for the Giants and went hitless in 11 at-bats, dropping his season average to .149.
Colvin appeared in 57 games this season for the Giants and batted .223.
The Giants called up Matt Duffy and Jarrett Parker from Double-A Richmond to take Uggla's and Colvin's spots on the roster.
Duffy, a 23-year-old shortstop, batted .332 in 97 games for Richmond. He also made appearances at second and third base.
Parker is a 25-year-old outfielder who batted .275 with a .463 slugging percentage in 99 Double-A games this season.
- Dan Gartland