Emory University freshman Katarina Su went 2-0 in singles matches and won a first-doubles contest over the course of three matches against nationally-ranked NCAA Division II squads for the third-ranked Eagles last week.  Playing sixth singles on Thursday against sixth-ranked Lynn University, Su won her match in straight sets, 6-2, 7-5, after falling 8-3 in the third doubles contest during a 6-3 Emory loss.  In a 7-1 Eagles defeat at third-ranked Barry University on Friday, she was leading 3-1 in the second set of the fifth singles match after dropping the first set in a tiebreaker, 7-6 (3), before play was stopped.  The freshman suffered a doubles loss in the third match, 8-2, earlier in the contest.  Su bounced back on Saturday, helping Emory to a 6-3 win over 15^th-ranked Nova Southeastern University.  She stepped into the first doubles match, and teamed with Gabrielle Clark to claim and 8-3 win, and followed with a 6-2, 6-0 win in the fifth singles match.  Su is now 16-1 in singles matches this season and 7-7 in doubles contests.  Her performance has helped Emory go 13-2 in spring season matches.