[PAR] [TLE] Gert Bo Jacobsen [SEP] Gert Bo Jacobsen (born 1961-12-28) is a former WBO welterweight title holder.  He is from Oestrup, Denmark.  His first 26 fights he was undefeated from 1983 to 1988.  His first lost came in October 1988 to Greg Haugen. [PAR] [TLE] Greg Haugen [SEP] Greg Lee Haugen (born August 31, 1960) is a retired American boxer.  Haugen was champion at both the Lightweight and Light-welterweight classes.
[PAR] [TLE] Gert Bo Jacobsen [ SEP ] Gert Bo Jacobsen ( born 1961 - 12 - 28 ) is a former WBO welterweight title holder . He is from Oestrup , Denmark . His first 26 fights he was undefeated from 1983 to 1988 . His first lost came in October 1988 to Greg Haugen . [PAR] [TLE] Greg Haugen [ SEP ] Greg Lee Haugen ( born August 31 , 1960 ) is a retired American boxer . Haugen was champion at both the Lightweight and Light - welterweight classes .
Both Gert Bo Jacobsen and Greg Haugen were professionals at what sport?
Both Gert Bo Jacobsen and Greg Haugen were professionals at what sport ?
boxer
boxer