"I know pretty much all the guys," said Moscoso, who said he has played with Gregor Blanco, Marco Scutaro and Pablo Sandoval in winter ball and in Venezuela.
Moscoso said he appreciates the opportunity to pitch in cavernous AT&T Park. In his last Major League stint, Moscoso pitched for the Rockies in hitter-friendly Coors Field. On the road, Moscoso's ERA was 2.70 in 23 1/3 innings, but at home the mark ballooned to 9.11 in 26 2/3 innings.
"It was tough in the beginning," he said. "It's a hitter's park. I got used to it. I made adjustments.
"It was a good experience. It was a different way to pitch."
Manager Bruce Bochy said the club might activate Moscoso on Sunday.
This story was not subject to the approval of Major League Baseball or its clubs.