Career
Marcin Matkowski and Fyrstenberg qualified as the eighth and final contenders in the 2006 Tennis Masters Cup. This was mainly because of their best Grand Slam result, in which they reached the semifinals at the Australian Open. In 2011, they reached the United States Open men"s doubles final and the final of the year-end championships.
They have participated in the year-end championships six times to date.
Grand Slam finals
= Doubles: 1 (0–1) Year-End Championships finals
= Doubles: 1 (0–1) Masters 1000 finals
= Doubles: 6 (2–4)
Doubles.