2005–2008

Bengson played collegiate D1 tennis at Long Beach State. She was the Big West Conference Freshman of the Year in 2005 and first team All-Big West honoree three times. A member of four League Championship and NCAA post-season teams, Bengson earned a collegiate career-high No. 31 in doubles and No. 115 national ranking. She was a key part of the 2008 team that achieved Long Beach's highest ever team ranking at No. 18 in the ITA rankings.

2011

Bengson won three doubles titles on tournaments of the ITF Women's Circuit in 2011.

2012

Bengson started her year playing at the Premier-level tournament in Sydney.^[3] She and Tyra Calderwood fell in the first round to Maria Kirilenko and Nadia Petrova. She and Calderwood then received a wildcard into the Australian Open, but they also fell in the first round to Eva Birnerová and Alberta Brianti. This was Stephanie's first Grand Slam performance.^[4]

In May, Bengson went back to the ITF Circuit, competing in a string of Japanese Challengers. She won her biggest title yet at the $50k-level tournament in Fukuoka in May, winning the doubles event with fellow Australian, Monique Adamczak.^[5] She then went to compete in the WTA International event, a week before Roland Garros in Strasbourg. She played alongside Adamczak in the doubles event and reached her first ever WTA Tour quarterfinal. The pair defeated Slovak duo Lenka Juríková and Kristína Kučová in the first round, and fell in the quarterfinals to Alexandra Cadanțu and Anne Keothavong.

Before the tour

Bengson played from 2005 to 2008 at nationally ranked Long Beach State. She was twice named first team all conference in both singles and doubles while earning career-high national rankings of No. 31 in doubles and 115 in singles during her senior season. Her team won the Big West Conference title and advanced to the NCAA's all four seasons she played at Long Beach State, including a No. 18 team-ranking during 2006. She graduated in 2008.

Doubles (4–7)

Outcome	No.	Date	Tournament	Surface	Partner	Opponents	Score
Runner-up	1.	15 August 2011	ITF Todi, Italy	Clay	Kirsten Flower	Federica Di Sarra Angelica Moratelli	6–7, 5–7
Runner-up	2.	22 August 2011	ITF Bagnatica, Italy	Clay	Kirsten Flower	Alice Balducci Benedetta Davato	4–6, 7–6(8), [10–12]
Runner-up	3.	19 September 2011	ITF Darwin, Australia	Hard	Tyra Calderwood	Maria Fernanda Alves Samantha Murray	4–6, 2–6
Winner	4.	31 October 2011	ITF Mount Gambier, Australia	Hard	Tyra Calderwood	Isabella Holland Sally Peers	w/o
Winner	5.	14 November 2011	ITF Traralgon, Australia	Hard	Tyra Calderwood	Monique Adamczak Bojana Bobusic	6–7(2), 6–1, [10–8]
Winner	6.	21 November 2011	Bendigo International, Australia	Hard	Tyra Calderwood	Storm Sanders Samantha Murray	2–6, 6–1, [10–5]
Runner-up	7.	4 February 2012	Burnie International, Australia	Hard	Tyra Calderwood	Arina Rodionova Melanie South	2–6, 2–6
Runner-up	8.	20 February 2012	ITF Mildura, Australia	Grass	Tyra Calderwood	Mervana Jugić-Salkić Ksenia Lykina	7–5, 5–7, [7–10]
Winner	9.	7 May 2012	Fukuoka International, Japan	Carpet	Monique Adamczak	Misa Eguchi Akiko Omae	6–4, 6–4
Runner-up	10.	23 September 2012	ITF Port Pirie, Australia	Hard	Chanel Simmonds	Sacha Jones Sally Peers	4–6, 2–6
Runner-up	11.	2 November 2013	Bendigo International, Australia	Hard	Sally Peers	Monique Adamczak Olivia Rogowska	3–6, 6–2, [9–11]