Going by Ring Mag since 1980 (don't have any info before that), year end, Fighter's last year as P4P #1 Bhop age 39 (2004) Jones age 34 (2003) Pac age 33 (2011) Hagler age 32 (1986) Floyd age 31 (2007) Whitaker age 31 (1995) Chavez age 30 (1992) Mosley age 30 (2001) Duran age 29 (1980) Ray Leonard age 26 (1982) DLH age 25 (1998 ) Hearns age 23 (1981) Tyson age 23 (1989) Fighter's first year as P4P#1 (Duran excluded since before 1980) Tyson age 21 (1987) Hearns age 23 (1981) DLH age 24 (1997) Ray Leonard age 26 (1982) Jones age 27 (1996) Chavez age 28 (1990) Whitaker age 29 (1993) Mosley age 29 (2000) Hagler age 29 (1983) Floyd age 29 (2005) Pacquiao age 30 (2008 ) Bhop age 37 (2002) lol Distance between 1st and last years at the top Jones 7 years Hagler 3 years Pac 3 years Floyd 2 years Bhop 2 years Tyson 2 years Whitaker 2 years Chavez 2 years DLH 1 year Mosley 1 year Ray Leonard none Hearns none # of years at the top Hagler 4 Pac 4 Floyd 3 Jones 3 Tyson 3 Chavez 3 Whitaker 3 Bhop 2 Mosley 2 DLH 2 Ray Leonard 1 Hearns 1 looking at the data i can see all types of haters incoming- let the mudslinging begin