I would like to add Curtis Martin into this discussion, in his 11 year career he fumbled just 29 times (lost just 16 of them) at an average of 2.6363 times per year. He also was the featured back all 11 of those years, with 319 carries per year (And 44 receptions per year) and only not making the 1000 yard mark in his final season due to injury.
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Barry Sanders played 10 seasons and had 27 career fumbles.
Herschel Walker wore #34 during his NFL career.
When Ty Cobb played baseball they did not issue numbers on the uniforms. So he never had a number during his entire career.
Chad Greenway wore number 52 during his career with the Minnesota Vikings.
Horace Clarke wore #20 during his career (1965-1974) with the New York Yankees.
Yes. The running back will get credit for the number of yards past the line of scrimmage the fumble occurred. If the line of scrimmage was at the defense's 20 yard line and the fumble occurred at the defense's 14 yard line, the running back would be credited with 6 yards rushing. If the line of scrimmage was at the defense's 14 yard line and the fumble occurred at the defense's 20 yard line, the running back would be credited with -6 yards rushing.
#44
Kimble Anders wore #38 during his ten year career (1991-2000) with the Kansas City Chiefs.
Magic Johnson has scored 17,707 points during his career in the NBA. He has a career average of 19.5 PPG during his career.
Ron Francis wore number 10 during his career in the NHL.
During his career with the Cowboys, Roger Staubach wore jersey number 12.
Elvis
During his NBA career, Wilt wore #13.
Herschel Walker wore #34 during his NFL career.
Roger Staubach wore #12 during his career with the Cowboys.
It was his number as a college running back at the University of Florida.
Cal Ripken, Jr. started his professional Major League Baseball career on August 24, 1981 at age 20. He wore the number 8 for the length of his career which ended on October 6, 2001 (total of 21 seasons, all with the Baltimore Orioles). (He did wear the number 7 during the early part of the 1981 season, but his official number for the duration of his MLB career was number 8.)
Brandon Lloyd is currently a free agent. During his career he wore number 80, 83, 84 and 85.