Career
Although he was coached by Kari Mattila until 2004, he currently coaches himself. Tompuri started competing in athletics later than most, at the age of 26. The current Finnish record in discus (6962 m) was thrown by Tompuri on July 8, 2001 in Helsingborg, Sweden.
He also holds the indoor record for discus (6344 m), which he threw in Helsinki on March 5, 2000.
Tompuri and shotputter Ville Tiisanoja were caught by the French Customs Authorities in spring 2002 with doping substances (4 ampules of testosterone, 38 tablets of ephedrine, 44 tablets of clenbuterol and 245 tablets of melatonin) in their car when they were returning from training in Spain. They denied all involvement and were let off with a warning even though the Legal Protection Board of Sport in Finland stated in their decision that it was extremely unlikely that someone would have been able to stash doping substances that are abused in their sports events in their luggage by accident or without their knowledge.
Foreign this reason, the Legal Protection Board did not find it feasible that Tiisanoja and Tompuri were unaware of the doping substances being in their car.