Jerzy Filip Janowicz Jr. (Polish pronunciation: [?j??? ja?n?v?it?]; born 13 November 1990) is a professional tennis player from Poland. Born in ?ód?, Poland he was introduced to tennis at the age of five by his parents. Known for his very powerful serve, he can hit at up to 249 km/h (155 mph) along with strong groundstrokes. Despite never winning an ATP title, Janowicz obtained a career-high world ranking of no. 14 in August 2013. He was awarded the Gold Cross of Merit by Polish President Bronis?aw Komorowski in 2013 for his achievements.Having finished as runner-up at two Junior Grand Slam tournaments, Janowicz rose to prominence on the pro circuit leading up to and following his run to the final—albeit as a qualifier, of the 2012 Paris Masters, during which he defeated five top-20 players such as Andy Murray and Janko Tipsarevi?. Despite losing to David Ferrer in the finals, he made his top-30 debut in the ATP Rankings and became the highest-ranked male Polish tennis player.
Janowicz became the first Polish male to reach a Grand Slam semifinal at the 2013 Wimbledon Championships, losing to eventual champion Andy Murray. He struggled with a major knee injury during the 2016 season, which led to a significant drop in rankings and form. Janowicz is currently coached by Günter Bresnik and his strength and conditioning coach is Piotr Grabia.