His other accomplishments included silver at the 1989 World Championships, as well as bronze at the 1983 and 1989 European Championships.
Miroshnichenko turned pro in 1990 and had limited success. He began his career by knocking out Roberto Servin in the first round. In Miroshnichenko's third fight, he stopped Future WBC International Champion, Ross Puritty.
In 1991, Miroshnichenko won the vacant Russian Heavyweight title from Nurlan Dzhanibekov. After vacating the Russian title in 1992, Miroshnichenko won a very close Split Decision against Samuel M'Bendjob by only one point. In 1993, Miroshnichenko beat former IBF Cruiserweight Champion, Ricky Parkey in an impressive third round Knockout.
After 21 consecutive wins against limited competition, Miroshnichenko was finally defeated by Oleg Maskaev in 1993 in Maskaev's first pro fight: a TKO in the third round. Miroshnichenko retired after the bout.
Miroshnichenko died in 2003, after falling down nine flights of stairs in his hometown. Rumours initially surfaced that his death was related to his testimony in the trial of a local judge, but police later ruled his death as accidental.
