Sebastian_Jahnsen
Sebastián Jahnsen Madico
Peruvian swimmer
Sebastián Jahnsen Madico (born 8 September 1990) is a Peruvian swimmer. He was born in Lima.[1] He competed at the 2012 Summer Olympics in the men's 200 metre freestyle, finishing 34th fastest in the heats, failing to qualify for the semifinals.[2] He also competed in the 50 metre and 100 metre events at the 2013 World Aquatics Championships.