Complex sentence: Rubén started his career with Rosario Central in 2004, in the Apertura 2006 tournament, Rubén struck 7 goals in 17 games making him the clubs top scorer.
Split into simpler sentences: Rubén started his career with Rosario Central in 2004. In the Apertura 2006 tournament, he scored 7 goals in 17 games making him the club's top scorer.