[9][10] With academics being first priority, Chong competed on a limited schedule on the ITF Junior Circuit but nevertheless captured two singles and seven doubles titles and peaked at a career-high No.

In her freshman year, Chong defeated Joulia Likhanskaia (Bowdoin College), 6–4, 4–6, 7–5, to win the NCAA Division III women's singles championship.

[12][13][14][15] Chong then garnered the prestigious Division III Honda Athlete of the Year Award to conclude a stellar college career.

The Honda Award honors the nation's top women in collegiate sports in recognition of their superior athletic skills, leadership, academic excellence, and eagerness to participate in community service.

The honor was voted on by national balloting among 1,000 NCAA member schools as part of the Collegiate Women Sports Awards program since 1976.

In 2015, her freshman year, Chong became the first Wesleyan women's tennis player in program history to compete in the individual NCAA Championships.

[21][22] Prior to Chong's exploits, Principia's Courtney Allen (1984–85), Menlo's Caroline Bodart (1988–89), Methodist's Elena Blanina (2001–02), and Emory's Mary Ellen Gordon (2003–04) were the only players to win two successive Division III women's singles titles.

[25] At the 2017 ITA Oracle Cup (formerly the ITA National Small College Championships) at Indian Wells, Chong defeated Ysabel Gonzalez Rico (Emory), 7–6, 6–2, to win the Division III women's singles and then teamed up with Victoria Yu (Wesleyan) to beat Ysabel Gonzalez Rico and Bridget Harding (Emory), 6–1, 6–1, to win the Division III women's doubles.

[27] At the 2015 USTA/ITA National Small College Championships, Chong defeated Ashnaa Rao (Johns Hopkins), 6–1, 6–1, to win the Division III women's singles and then partnered teammate Victoria Yu to beat Bridget Harding and Katarina Su (Emory), 6–0, 6–1, to claim the doubles.

[32][33][34][35] [36][37][38] With the global pandemic adversely impacting the ITF Women's World Tennis Tour, the latter part of 2020 saw Chong make a concerted assault on the local tournaments in Hong Kong.

Trailing by a break and 5–3, Chong rallied to win three games in succession to force a tiebreak before claiming seven points in a row from 2–0 down to grab the breaker.

She also competed in the doubles and was given a main-draw wildcard in 2016 (w/ Katherine Ip) and 2018 (w/ Zhang Ling) but went out in the first round to Nao Hibino / Alexandrina Naydenova and Alizé Cornet / Zheng Saisai, respectively.

[43] She received a wildcard for the singles main draw at her home tournament, the 2024 Hong Kong Tennis Open but lost to Priscilla Hon.

In 2017, she partnered Katherine Ip to win the deciding doubles against Nigina Abduraimova and Akgul Amanmuradova, 6-7, 6-3, 6-3, to seal a come-from-behind 2-1 victory over Uzbekistan in the final to send Hong Kong up to Group I for the following year's campaign.

At the 18th Asian Games Jakarta-Palembang 2018, Eudice Chong produced the first noteworthy upset when she sent third-seeded Incheon 2014 silver medalist, Luksika Kumkhum, tumbling out in the second round of the women's singles, 4-6, 7-6, 7-6.

[46] In 2014, Chong was also a member of the Hong Kong women's contingent that reached the quarterfinals of the team event in Incheon, South Korea.

[47] At the XXX Summer Universiade in Naples, Italy, Chong captured Hong Kong's first-ever medal in singles and then added another bronze in women's doubles together with Maggie Ng.

At the All China Games in 2017, Chong played in the women's team event that saw Hong Kong finish ninth overall among 27 provincial sides.

[51] Chong competed in women's doubles partnering Tiffany Wu and reached the quarterfinals in singles at the Toyota Asian Championships 2013 held in Bangkok, Thailand.

[56] Chong was named as the first Tennis Ambassador by Clearwater Bay Golf & Country Club in 2019, providing financial assistance to her.