Krzysztof Warzycha joined Panathinaikos in December 1989, and won 5 Greek championships, 5 Greek cups, 2 Greek super cups 1993, 1994, while he was the highest scorer of the Greek championship 3 times. He is Panathinaikos' all-time leading goalscorer and an idol for the club. Warzycha is considered by many to be one of the best foreign players who have played in Greece. He was one of two Poles in the title-winning side of 1995, with fellow countryman Józef Wandzik keeping over a dozen clean sheets during the season. He was the top scorer of Panathinaikos with 319 goals in all competitions.
The most iconic goal
On April 3, 1996, Warzycha scored probably the most important goal of his career, against Ajax Amsterdam in Amsterdam Olympic Stadium and gave Ajax their first home defeat in four years, in their last home match before the demolition of the stadium.
First goal scorer
At the end of the 2000/01 season, Warzycha had scored an incredible 235 goals in 352 matches and had been the Greek Alpha Ethniki premier league's top scorer in three different years in the 90s. His appearances in the UEFA Champions League have been no less impressive – he scored six goals in Panathinaikos' nine games on the way to the semi-finals of the 1995/96 competition. With eight goals scored in all UEFA Champions League games, Warzycha remained the best scorer of Polish nationality in this competition until the 2012–13 season, when Robert Lewandowski scored 10 times for Dortmund in Dortmund's surprise run to the Champions League final. On the 29th of April, 2001 during the match with Ionikos FC, Krzysztof Warzycha scored the 233rd goal of his career in Greece, climbing to second place on the list of all-time goal scorers, tied with Mimis Papaioannou. Warzycha later scored his 234th goal and become sole occupant of this spot. He was granted Greek citizenship in 1998. He retired in 2004.
Managing career
After Panathinaikos head coachHenk Ten Cate was let go on December 8, 2009, Warzycha was appointed as assistant coach alongside Nikos Nioplias. On 1 March 2012, Krzysztof was appointed as the head coach of Delta Ethniki side Egaleo, with this being his first venture into management. In 2012, Krzysztof Warzycha was the head coach of Fokikos F.C. In April 2017 he replaced Waldemar Fornalik on Ruch Chorzów manager position.
International career
He played 50 times for Poland, scoring 9 goals. He played the last game for the Polish national team in April 1997 against Italy in Napoli.