Jeff Mayweather: Pacquiao has been in decline since the Margarito fight

By Chris Williams: Jeff Mayweather, the uncle of unbeaten Floyd Mayweather Jr., thinks Manny Pacquiao has been on the downhill slide since his grueling but one-sided win over Antonio Margarito in 2010. Mayweather thinks the end results of Pacquiao's slide was his 6th round knockout loss to Juan Manuel Marquez. Mayweather told fighthype.com "They've seen