For five years running – 2002, 2003, 2004, 2005 and 2006 – John Kuczynski was ranked number one according to American Darts Organization’s (ADO) points standings. He played at the 2005 BDO World Darts Championship, losing in the first round to former world champion Ted Hankey.
He was the ADO’s 2006 National cricket champion. In 2005, he reached the last 32 at the Las Vegas Desert Classic and was a finalist at the Quebec Open and a member of the U.S. World Cup Team.
He played in the 2006 PDC World Darts Championship, whitewashing Lionel Sams in the first round without dropping a single leg. He then went on to beat Dutchman Jan van der Rassel in the second round before losing to Gary Welding in the last 16. Kuczynski had won the first set and could have taken the second before Welding leveled. The American went back in front to lead 2-1, but Welding fought back to take the next three sets and a quarter final place to end Kuczynski’s run.
At the 2006 World Series of Darts where the prize for an American winner was $1 million, he was the only American player who managed to progress beyond the opening round. He defeated John Part in the first round but went out in the second round to Wayne Mardle.