SHOWTIME & SHOWTIME Extreme presents a 2-Part card that airs on SHOWTIME from 5:15 to 7:15 P.M. followed by the main event of this 2-part card that will air on SHOWTIME Extreme from 10 to 12:00 P.M. The main event of this combination card is a 12-round IBF World Welterweight title fight between the current champion Kell "Special K" Brook (36-1, 25 KO's) from Sheffield, Yorkshire, United Kingdom and his challenger Errol "The Truth" Spence Jr. (21-0, 18 KO's) from Desoto, Texas by way of Long Island, New York City, New York. Both cards are airing live today from the Bramall Lane Football Ground (outdoors) in Sheffield, Yorkshire, United Kingdom.The scheduled undercard bouts that will be split between the 2 cards are as follows:vacant Commonwealth (British Empire) heavyweight title: David Allen vs. Lenroy Thomasvacant Commonwealth (British Empire) super featherweight title: Andy Townend vs. Jon Kaysvacant WBA Continental super middleweight title: Jamie Cox vs. Lewis Taylorvacant WBA Super World super middleweight title: George Groves vs. Fedor ChudinovBantamweight: Kyle Yousaf vs. Louis NormanCruiserweight: Lawrence Okolie vs. Rudolf HelesicLightweight: Joe Cordina vs. Josh thorneMiddleweight: Anthony Fowler vs. Arturs GeikinsSuper Lightweight: Atif Shafiq vs. Dean EvansSuper Welterweight: Nadeem Siddique vs. Paul Olah