Born and raised in Ventura, California, Whitcomb was naturalised as an Australian in February, 2018 after having played in Australia since 2013.
Whitcomb attended Washington during her college career before beginning her professional career by playing in Germany from 2011-2013.
After parting ways with the Wolfenbuttel Wildcats, Whitcomb received a last-minute call-up to play for the Rockingham Flames in the Western Australian State Basketball League.
As Whitcomb began playing for the Flames, it didn't take long for her to make her mark as she earned All-Star Five honours and the league MVP trophy in her first season with the team.
Whitcomb's time in the WSBL netted her three MVP titles, three scoring champion titles, two championships and two subsequent Grand-Final MVP awards, as well as one All-Defensive Five nod in her four years with the Flames.
After dominating the state competition, the WNBL call-up came for Whitcomb in time for the 2015-16 season with the Perth Lynx.
The transition from the WSBL to the WNBL appeared a smooth one for Whitcomb, who in her first year in the league put up 19.4 points, 5.7 rebounds, 2.9 assists and 2.8 steals per game. She finished third in MVP voting while subsequently earning an All-Star Five nod.
In Whitcomb's second WNBL season, she took yet another step forward as she averaged 23.6 points per game to lead the league in scoring while once again being named to the WNBL All-Star Five.
Following the season, Whitcomb signed with the Seattle Storm as she realised her dream of playing in the WNBA. In 2018 Whitcomb was apart of the Storm's championship winning side as she averaged 6.1 points, 1.1 rebounds and 1.1 assists per game throughout the playoffs.
2018 was a big year for Whitcomb, as she was named as the injury replacement for Leilani Mitchell in the FIBA World Cup side, helping the team win the Silver medal. At the championships Whitcomb averaged 8 points, 3.8 rebounds and 2.3 assists per game as her strong shooting stroke proved a perfect antidote to the double-teams that Liz Cambage received down-low.
After the tournament, Whitcomb joined Basket Lattes Montpellier Agglomération (BLMA) in France. Notably, she exploded for a 40 point performance in the EuroCup in late 2018. BLMA would go on to lose in the Euro Cup final as Whitcomb averaged 17.1 points per game across the tournament.
FIBA World Cup: 2018 (Silver)
WNBA Champion: 2018
WNBL Leading Scorer: 2017
WNBL All-Star Five: 2016-2018
WNBL Top Shooter Award: 2017
WSBL Champion: 2014, 2015
WSBL MVP: 2013-2015
WSBL Grand-Final MVP: 2014, 2015
WSBL Scoring Champion: 2013-2015
First-team All-Pac-10: 2010
2011-2012 - ChemCats Chemnitz (Germany)
2012-2013 - Wolfenbuttel Wildcats (Germany)
2013-2016 - Rockingham Flames (WSBL)
2013 - SKBD Rucon (Slovakia)
2015-2018; 2020-current - Perth Lynx (WNBL)
2017-current - Seattle Storm (WNBA)
2018-current - Basket Lattes Montpellier Agglomération (France)
2021-current - Galatasaray (Turkey)