[1] Outstanding successes resulted in an invitation to participate in the 2014 PDC World Cup of Darts, together with Krzysztof Stróżyk.
After a fierce match in the first round, they defeated the seeded Finland team (Jarkko Komula and Jani Haavisto) with a score of 5–4 in legs.
[2] In the second round, the Poles faced the Wales team (Mark Webster and Richie Burnett).
[3] During the 2014 WDF Europe Cup, he lost to Danny Noppert in the first round of singles competition.
In the singles competition, he advanced to the fourth round by defeated Jacques Labre, Kyle McKinstry and Wayne Halliwell.
[11] In July 2023, Chmielewski returned to active competition at the national level and took part in the qualifying tournament for the 2023 Poland Darts Masters.