Luis Carbonetti set the clubhouse pace in the second round of the Van Lanschot Senior Open with a four under par 68 to open up a three stroke lead. The 57 year old Argentine, who started the round one stroke behind his elder brother and overnight leader Horacio, made a flying start with six birdies in his opeining 13 holes but dropped shots on the 15th and 17th at The Royal Haagsche Golf and Country Club, in The Netherlands.