| Country (sports) |  Argentina |
|---|---|
| Residence | Barcelona, Spain |
| Born | 12 October 1974 Buenos Aires, Argentina |
| Height | 1.80 m (5 ft 11 in) |
| Turned pro | 1994 |
| Retired | 2016 |
| Plays | Right-handed |
| Prize money | US$ 1,745,936 |
| Singles | |
| Career record | 22–31 |
| Career titles | 0 2 Challenger, 0 Futures |
| Highest ranking | No. 77 (20 July 1998) |
| Grand Slam singles results | |
| Australian Open | 1R (1998, 1999) |
| French Open | 2R (1998) |
| Wimbledon | 1R (1998) |
| US Open | 3R (1998) |
| Doubles | |
| Career record | 299–258 |
| Career titles | 15 19 Challenger, 1 Futures |
| Highest ranking | No. 21 (8 March 2004) |
| Grand Slam doubles results | |
| Australian Open | 3R (1999, 2002, 2008, 2009) |
| French Open | SF (1997) |
| Wimbledon | 3R (2001) |
| US Open | 3R (2003) |
| Grand Slam mixed doubles results | |
| Australian Open | 2R (2002, 2004) |
| French Open | QF (2004) |
| Wimbledon | 2R (2001, 2004, 2005, 2009) |
| US Open | 2R (2001) |
| Last updated on: 7 August 2021. | |
Lucas Arnold Ker (Spanish pronunciation: [ˈlukas aɾˈnol ˈkeɾ];[1] born 12 October 1974) is an Argentine former professional tennis player.
Arnold Ker started playing tennis in the Olivos Tenis Club of Buenos Aires, under coach Malcolm Campbell. He is the younger brother of Patricio Arnold. He is right-handed and turned professional in 1994. He played several times for the Argentine Davis Cup team, where he made his debut in 1997 against Venezuela. Arnold Ker was Roger Federer's opponent in the latter's first professional match in 1998, beating the 17-year-old future singles world No. 1 and 20-time major singles champion in straight sets. Arnold Ker retired from professional tennis in 2016.
- ^ dariozatra (14 September 2009). "Testimonio Lucas Arnold Ker". YouTube (in Spanish). Archived from the original on 19 December 2021. Retrieved 10 February 2018.