??? I think Sara and Calleigh are the first CSI characters to show up. Unless I missed something, so far it has been (winners bolded for the polls that are closed):
Day 1:
Dana Scully (X Files) vs Myka Bering (Warehouse 13)
Erica Evans (V) vs Allison Dubois (Medium)
Kate Beckett (Castle) vs Chickie Brown (Southland)
Mary Beth Lacey (Cagney & Lacey) vs Christine Cagney (Cagney & Lacey)
Day 2:
Ziva David (NCIS) vs Andy McNally (Rookie Blue)
Sarah 'Mac' MacKenzie (JAG) vs Sam Waters (Profiler)
Sydney Bristow (Alias) vs Lana Kane (Archer)
Annie Walker (Covert Affairs) vs Michelle Dessler (24)
Day 3:
Jo Lupo (Eureka) vs Astrid Farnsworth (Fringe)
Olivia Dunham (Fringe) vs Audrey Parker (Haven)
Rita Ortiz (NYPD Blue) vs Jackie Curatola (Blue Bloods)
Juliet O'Hara (Psych) vs Diane Russell (NYPD Blue)
Day 4:
Elena Delgado (Without A Trace) vs Grace Van Pelt (Mentalist)
Teresa Lisbon (Mentalist) vs Kensi Blye (NCIS: LA)
Chloe O'Brian (24) vs Fiona Glenanne (Burn Notice)
Sara Walker (Chuck) vs Mary Shannon (In Plain Sight)
Day 5:
Kate Murphy (Body of Proof) vs Jordan Cavanaugh (Crossing Jordan)
Abby Sciuto (NCIS) vs Sara Sidle (CSI)
Lydia Adams (Southland) vs Kima Greggs (The Wire)
Jane Rizzoli (Rizzoli & Isles) vs Calleigh Duquesne (CSI: Miami)
Day 6:
Kono Kalakaua (Hawaii Five-0) vs Debra Morgan (Dexter)
Jane Tennison (Prime Suspect) vs Jane Timoney (Prime Suspect)
Maritza Cruz (Third Watch) vs Stacy Sheridan (TJ Hooker)
Rita Lee Lance (Silk Stalkings) vs Dee Dee McCall (Hunter)
The guys' tournament totally passed us by, but despite missing the first few days of this one, we haven't missed any of the CSI ladies.