Forsythe, a third baseman by trade who has almost exclusively played second base this season, made his first start of the season at shortstop on Monday against the Braves.
Forsythe, who has appeared in 40 games at second base, became the fifth different shortstop the team has used in 2012. The others who have played there include Jason Bartlett (26 starts), Everth Cabrera (64), Andy Parrino (18) and Alexi Amarista (eight).
"I think he feels good on that side of the infield," said Padres manager Bud Black.
Forsythe has appeared at shortstop once this season and two games at third base, but before Monday had yet to make a start this season at either position.
The Padres planned on looking at Forsythe at shortstop as far back as Spring Training, but he suffered a broken bone in his left foot in March and eventually had surgery. He missed the first 54 games of the season before being reinstated from the disabled list on June 3.
Black said you can expect to see three players -- Amarista, Cabrera and Forsythe -- at the position for the rest of the regular season.