EIWA Wrestler of the Week is sophomore Greg Parker of Princeton, who moved up  a weight to 184 to take on tenth-ranked Francis Volpe of Harvard. He scored  three takedowns in the bout to win 6-1. The day before, he turned in a  technical fall over his Brown oppoment, which was a key ingredient in the Princeton defeat of Brown, the first for Princeton over an Ivy League  opponent in six years.    Most Offensive Wrestler of the Week was Joe Clarke of Princeton, who went 5-0 on the weekend, with two falls and two technical falls. The most impressive was his pin of highly regarded David Dies of Brown, another key ingredient in the Princeton defeat of the Bruins.    Penn demonstrated that they have recovered from their recent problems, as they got everyone into the lineup for the first time in weeks against Harvard  on Saturday, winning 25-11, and followed that up with 47-3 and 36-7 wins over  Brown and George Mason on Sunday.