we made sense to diana parsons who said her sister has no interest in romantic interludes with men. >rea was actually 16 years old when she told us that she was gay. >> cosby's attorneys used phone records to try to prove a romantic relationship. pointing to more than 50 calls constand made to cosby after the alleged assault and before march 31st when constand left temple. >> i found it to be the game changer. there were calls after the so-called sexual encounter. there was call after call after call after call. >> constand testified she was just returning calls from cosby a temple trustee. >> and there is no forensic evidence in this case because it's an old case. it's from 2004 and so ana, they really have to go be the credibility of witnesses. who do you believe? do you believe constand or cosby? we don't think he'll be testifying but some of his statements will come into this trial. it is believed. so he will through those will be speaking and he said it was consensual. >> what do you anticipate because this is round two being different this time? >> well, we don't know a lot. the

. >> diana parsons is andrea's older sister, and knows her better than anyone else, and she spoke exclusivelyh cnn about her sister who she describes as private and centered. >> she's very spiritual and she is calm. she is shumable. she is honest. >> reporter: and she is also a lifelong athlete. >> she played soccer, and she played basketball. >> reporter: she chose to focus on basketball as she grew ta taller. >> andrea is six feet. >> six feet. >> yes. her basketball skills are unbelievable. i think that she was in grade 12 and different universities started coming forward offering andrea scholarships. >> reporter: andrea constand play played two years in europe, and then her goal was to play for the wnba, but it did not happen. how traumatic was that for her? >> well, she really wanted it, but that path did not work out for her, and she moved along to the next path. >> and in 2001 she decided to t mthe make a career off of the court, and so she accepted a administration job with philadelphia's temple university basketball team, and path that led her to the scenter of bill cosby's world. >>

diana parsons is andrea's older sister. knows her better than anyone else.d she spoke exclusively with cnn about her sister, who she describes as private and centered. >> she is very spiritual and she's calm. she's humble. she's honest. >> reporter: and she's also a life long athlete. >> she played soccer and she played basketball. >> reporter: she chose to focus on basketball as she grew taller. >> andrea is 6 feet. >> reporter: 6 feet. >> yes. her basketball skills are unbelievable. i think she was in grade 12 and different universities started coming forward, offering andrea scholarships. >> reporter: andrea constand played four years of division one ball at the university of arizona. it was followed by two years of pro ball in europe. her goal, to play for the wnba. but it didn't happen. how traumatic was that for her? >> i think it was something she really did want, but that path did not work out for her and she moved along to the next path. >> reporter: in 2001, she decided it was time to make a career off the courts. so she accepted an administration

which made sense to diana parsons who says her sister has no interest in romantic interludes with men>> andrea was 16 years old when she told us that she was gay. >> reporter: cosby's attorneys used phone records to try to prove a romantic relationship. pointing to more than 50 calls constand made to cosby after the alleged assault and before march 31 when constand left temple. >> i found to be the game changer. there were calls after the so-called sexual encounter, call after call after call after call. >> reporter: constand testified she was just returning calls from cosby, a temple trustee. >> and a cnn special report, the case against cosby, airs tonight at 8:00 p.m. eastern. >>> so watch this, this pilot in florida kissed the tarmac after surviving this really dangerous landing at an airport in florida. >> the pilot was coming in for a landing when the landing gear malfunctioned and he was forced to make an emergency landing nose first there. luckily here he is again kissing the ground. miss the pilot and his passenger not injured. glad everybody is all right. >>> that is it for

which makes sense to diana parsons who says her sister has no interest in romantic interludes with mena was actually about 16 years old when she told us that she was gay. >> reporter: cosby's attorneys used phone records to try to prove a romantic relationship. pointing to more than 50 calls constand made to cosby after the alleged assault and before march 31st when constand left temple. >> i found it to be the game changer. there were calls after the so-called sexual encounter. there was call after call after call. >> reporter: constand testified she was just returning calls from cosby, a temple trustee. >> jean casarez joins me now to talk about her reports. really looking forward to it. first, i want to ask you about the fact that we're going to hear from andrea's sister for the first time. how pivotal is the testimony to this case? >> well, andrea constand, diana's sister who obviously is the accuser, testimony is pivotal. this arises out of an incident in 2004. she says bill cosby was her mentor. he invite heard to his home where she had been before. she said that time she was dru