After the proceedings closed for the day, Fuentes told Spanish media on his way out of court that RSOC sounded "like the name of a good wine."
The Puerto trial is scheduled to run until March 22. The Spanish anti-doping agency has already asked for the judge to hand over any information that could assist in its investigation into doping activities when it issues its verdict.
Badiola had already made similar accusations during his one-year stint in charge of Sociedad.
Angel Villar, president of the Spanish football federation, told El Pais newspaper on Tuesday that "thank God there is no doping in football, well, very little, so little that the cases that appear are anecdotal. In Spain, football players go through tons of tests each weekend and nobody tests positive. That's the reality."
Spain coach Vicente del Bosque said that he had never seen "anything that made me suspect" a player was using a banned substance.
Badiola's accusations cover the years from 2001-07. Numerous players played for Sociedad during that time, including Spain and Real Madrid midfielder Xabi Alonso, who helped the team finish runner-up in the league in 2002-03 before signing with Liverpool a season later.
Sociedad midfielder Xabi Prieto came up through the club's youth system and has played for its first team since 2003. He denied there has ever been doping in his club.
"Neither I nor my teammates ever saw anything strange," Prieto said. "If someone has seen something strange or that they don't like, let them denounce it before a judge, but for us, the ones implicated, the ones who have been here for many years, we haven't ever seen anything strange and we have a clear conscience.
"Cycling has nothing to do with football," he said. "They can't give you anything to make you shoot the ball into the net."