Career
His current partner is Nenad Zimonjić. They have been playing together since 2015. Matkowski and Mariusz Fyrstenberg qualified as the eighth and final contenders in the 2006 Tennis Masters Cup.
This was mainly because of their reaching the semifinals at the Australian Open.
In 2011, they reached the United States Open men"s doubles final and the final at the year-end championships. They have participated in the year-end championships six times to date.
Grand Slam finals
= Doubles: 1 (0–1) = Mixed doubles: 2 (0–2) Year-End Championships finals
= Doubles: 1 (0-1) Masters 1000 finals
= Doubles: 9 (2 titles, 7 runners-up)
Doubles.