In my opinion, Sugar Ray Robinson and Henry Armstrong. not just the two best 147 pounders, but the two best, period.
randall bailey
He was welterweight champion from 1946 to 1951, and 5 time middleweight champion from 1951 through to 1960.
Not at this time.
wbo jr lightweight title wbo and ibf lightweight titles wbc super lightweight (jr welterweight) title wbc, wba and ibf welterweight titles wbc jr middleweight title wbo middleweight title after a comeback, he won back the wbc jr middleweight title just before his fight with mayweather jr.
Mahammad ali
mosley won the ibf lightweight title in 1997, made 8 defenses, then moved up to welterweight in '99. he beat Oscar de la hoya for the wbc welterweight title in 2000, made three defenses before losing to vernon Forrest. beat de la hoya again in 2003, this time for the junior middleweight crown, then lost the 154 pound titles to winky wright. he moved back down to welterweight and in 2007 won back a title at that weight, and still holds it.
Wilfred Benitez was the Youngest Junior Welterweight (140 lb), and Pipino Cuevas was the youngest Welterweight (147 lb).
Muhammad plays Boxing but now hes retired :-)
Three time World Heavyweight Champion
Jack Johnson was World Champion from 1908 - 1915 but the establishment tried to have a "white heavyweight championship" during that time, but no one took it seriously.
GSP has been holding the UFC Welterweight Championship belt since UFC 83 held on April 19th 2008. He has been able to successfully defend his title ever since. He has defended his title a record 9 times. He has defeated some of the top fighters in the Welterweight division like Matt Hughes, Matt Sera, B J Penn, Carlos Condit etc
The 3-time World Boxing Champion Mohamed Ali. He became a Muslim and changed his name.