|Full name||Jeffrey Mallen Christiaens|
|Date of birth||17 May 1991|
|Place of birth||Brussels, Belgium|
|Height||1.70 m (5 ft 7 in)|
|* Senior club appearances and goals counted for the domestic league only and correct as of 11:52, 7 May 2017 (UTC).
‡ National team caps and goals correct as of 22:55, 5 March 2014 (UTC)
Christiaens started his youth career at Ruiselede before moving on to Deinze and eventually Club Brugge. Towards the end of the 2010–11 season, he was released by Club Brugge and signed for Belgian Third Division side Torhout. He made his senior debut on 17 August 2011 in the 1–1 home draw against Géants Athois, coming on as a substitute in 80th minute. He made his first start and scored his first goal for the club in his second appearance in the 2–2 away draw to Royal Mouscron-Péruwelz.
On 19 November 2011, he made an appearance for Filipino side Global FC in a round of 16 match in the 2011 United Football Cup against the Philippine Army. They won 3–0 and progressed to the quarter-finals. However, there were no reports indicating that there was any deal in place which would see him play for Global FC. It would be his only appearance for the club before returning to Torhout. Upon his return, he would make a further four appearances and finishing the 2011–12 season with 13 appearances.
In August 2011, the team manager of the Philippines national team traveled to Europe to scout for potential talent. Three players that were tapped were Belgian–Filipinos which included Christiaens. They traveled to the Philippines in early September to try out for the Philippines national under-23 team that will be competing at the 2011 Southeast Asian Games. Christiaens in particular was able to impress sufficiently that he was also named in the senior national team's 20-man squad for the 2011 Long Teng Cup.
- Global FC
- "Player information". HKFA.com. Hong Kong Football Association. Retrieved 7 December 2011.
- "Jeffrey Christiaens – Speler". KMTorhout.be. Torhout 1992 Koninklijke Maatschappij. Retrieved 2011-09-24.
- "Officiel : Christiaens à Torhout". Foot Goal. 2011-04-07. Archived from the original on 2012-10-07. Retrieved 2011-09-24.
- "Torhout vs. Géants Athois". Soccer Way. Retrieved 2011-09-24.
- "Mouscron-Péruwelz vs. Torhout". Soccer Way. Retrieved 2011-09-24.
- Olivares, Rick (2011-11-20). "Defending UFL Cup champs Global slashes Army". Associated Broadcasting Company (TV5). Retrieved 2011-11-21.
- "Jeffrey Christiaens profile". Soccer Way. Global Sports Media. Retrieved 2012-06-01.
- Moore, Roy (2012-08-24). "Growth of PHL football as seen at the grassroots and in UFL". GMA News. Philippines. Retrieved 2012-09-10.
Jeffrey Christiaens and Denis Wolf have already signed with Global, Stallion took on Jason De Jong and OJ Porteria, while loaning in Spanish duo Rufo and Joaco from Inter De Madrid.
- Atencio, Peter (2011-09-08). "Fil-Spanish booter impresses coach Weiss". Manila Standard Today. Retrieved 2011-09-24.
- Tupas, Cedelf P. (2011-09-21). "New Azkals team join Long Teng Cup tilt". Philippine Daily Inquirer. Retrieved 2011-09-24.
- Jeffrey Christiaens at National-Football-Teams.com