of 2007–08 came in a 1–1 draw against Rosario Central during the 2008 Torneo Clausura. On 4 May 2008, he assisted Sebastián Battaglia in scoring Boca's only goal in their 1–0 home victory in the Superclásico with River Plate. Riquelme had taken a corner which was played to Battaglia, who headed the ball into the net in the 14th minute. During Boca's last 2008 Copa Libertadores group-stage fixture against Maracaibo on 22 April 2008, Riquelme assisted defender Gabriel Paletta in scoring Boca's first goal when his free-kick was played towards Paletta, who headed the ball into the net in the tenth minute. Riquelme then scored Boca's third goal in the 74th minute with a close-ranged chip as Boca claimed a 3–0 home victory and finished in second position of their respective group, qualifying for the knockout stages of the competition. During the first-leg of the round of 16 stage on 30 April 2008, Riquelme side footed the ball into the net in the sixth minute after receiving a pass from Álvaro González. Boca went on to win the match 2–1 and eventually claimed a 4–2 aggregate win. The club then faced Fluminense in the semi-final stages. In the first leg on 28 May 2008, Riquelme scored in the 12th minute of the match to give Boca a 1–0 lead after receiving a pass from Rodrigo Palacio, who played the ball across goal for Riquelme to convert. In the 65th minute, Riquelme scored from a free-kick which gave Boca a 2–1 lead before Fluminense again equalized. The second leg saw Fluminense defeat Boca Juniors 3–1, eliminating the Argentine side 5–3 on aggregate. Riquelme had scored four goals in the competition. 2008–09 season In October 2008, Boca Juniors centre-back Julio César Cáceres had a very public conflict with his teammate Riquelme, when during an interview on a Paraguayan radio station in Asunción, during his training with his national team, Cáceres questioned Riquelme's motivation. He claimed that, "In some matches, he is apparently running and in others he is passive. He seems to be mentally saturated. He seems to have more motivation when he plays for his country." Riquelme responded by saying, in a telephone interview on the Fox Sports cable channel, "He doesn't know what I feel for the club. I take part in pre-match concentration just like the other players and I didn't have a holiday because I chose to play