Complex sentence: Andre Dirrell (born September 7,1983) is an American professional boxer who has held the IBF interim super middleweight title since May 2017, having previously challenged for the IBF world title in 2015 and also the WBC super middleweight title in 2009.
Split into simpler sentences: Andre Dirrell (born September 7,1983) is an American professional boxer. He has held the IBF interim super middleweight title since May 2017, having previously challenged for the full IBF title in 2015 and also the WBC super middleweight title in 2009.