Sylwester Janiszewski (born 24 January 1988) is a Polish racing cyclist, who last rode for UCI Continental team Voster ATS Team.
[2] Janiszewski was suspended for testing positive to Androstenedione after winning the 2012 Memoriał Henryka Łasaka, and was stripped of his win.
He won the Coupe des Carpathes the following day, but was allowed to retain the victory.
[3]