Xaverian masters Brockton Xaverian coach Charlie Stevenson approached yesterday's game against No. 3 Brockton as a sort of litmus test for his team.  quot;This was really a measuring game for us, quot; he said after a 35-21 victory for his No. 6 Hawks.  quot;As a team, we weren't really sure where we were at after the first two games. quot;