As a Senior (2015-16)
• ITA Scholar-Athlete
• Compiled a 4-7 overall record
• Participated in one dual match, falling to Arizona's Inge Hendrikx at the No. 6 spot
• Reached consolation semifinals of the Saint Mary's Fall Invitational
• 0-2 in three-set matches
• In doubles, was 3-4 overall, playing with two different partners
As a Junior (2014-15)
• Pac-12 All-Academic First Team selection
• ITA Scholar-Athlete
• 6-18 overall and 5-14 in duals, playing mainly at the No. 6 spot (5-13)
• 0-6 against nationally-ranked opponents
• 0-1 in three-set matches
• In doubles, was 6-10 overall, including 5-8 with Krista Hardebeck in dual matches
As a Sophomore (2013-14)
• Chalked up an 8-5 overall record, all in tournament play
• 1-0 in three-set matches
• 0-2 against nationally-ranked foes
• Reached round of 16 at Saint Mary’s Invitational and Pac-12 Championships
• Advanced to quarterfinals of NCTC Classic
As a Freshman (2012-13)
• 14-6 overall and 5-3 in duals, playing all her matches at the No. 6 spot
• 9-3 in tournament matches
• 1-2 against nationally-ranked foes, with her lone victory coming against No. 51 Jenny Jullien of Saint Mary’s (6-2, 6-1)
• 0-1 in three-set matches
• Provided the clinching point in one match
• Won season-best six matches in a row from March 8-April 26
• Picked up victory in her collegiate debut, defeating San Francisco’s Sofia Holmberg 6-2, 6-4
• Reached the consolation quarterfinals of the Pac-12 Championships
• In doubles, racked up a 5-5 record playing with two different partners
• Reached consolation semifinals of the Pac-12 Championships with Amelia Herring
Prior to Stanford
• Attended La Jolla Country Day High School
• Four-year letterwinner, two-time team MVP and team captain during her junior year
• Led team to four Coastal League championships and two DIII-CIF team crowns
• 2011 CIF doubles champion
• Two-time San Diego Union Tribune All-Academic Team selection
• Member of 2011 G18U SoCal National team
• 2010 doubles quarterfinalist (clay courts, hard courts)
• Competed at USTA National Open Championships (2010 singles finalist, 2010 doubles champion)
• Participated at USTA L3 Nationals (2009 California Bowl singles finalist, Carmel Valley Athletic Club Jr. Championships singles and doubles champion)
• SoCal Junior Sectional Championships (2011 singles quarterfinal playoff champion)
• SoCal Designated Opens (2011 two-time doubles finalist, 2010 singles champion, 2009 two-time singles finalist)
Personal
• Born in San Diego, Calif.
• Parents are James Kostas and Deborah Otero
• Has one sister, Sophia
Career Statistics
Singles
| Year | 1 | 2 | 3 | 4 | 5 | 6 | Overall | Dual |
| 2012-13 | - | - | - | - | - | 5-3 | 14-6 | 5-3 |
| 2013-14 | - | - | - | - | - | - | 8-5 | - |
| 2014-15 | - | - | - | - | 0-1 | 5-13 | 6-18 | 5-14 |
| 2015-16 | - | - | - | - | - | 0-1 | 4-7 | 0-1 |
| TOTALS | - | - | - | - | 0-1 | 10-17 | 32-36 | 10-18 |
Doubles
| Year | 1 | 2 | 3 | Overall | Dual |
| 2012-13 | - | - | - | 5-5 | - |
| 2013-14 | - | - | - | 3-1 | - |
| 2014-15 | - | - | 8-8 | 8-10 | 8-8 |
| 2015-16 | - | - | - | 3-4 | - |
| TOTALS | - | - | 8-8 | 19-20 | 8-8 |