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Pachuca was the Mexican club where Cavenaghi played. The Argentine striker joined Pachuca in 2006 and spent two seasons with the club, scoring 29 goals in 60 appearances. During his time at Pachuca, Cavenaghi helped the team win the 2007 Clausura championship and the 2007 CONCACAF Champions Cup. He also finished as the top scorer in the 2007 Clausura tournament.