- Jim Abbott, only one-handed Major league pitcher to pitch a no-hitter.
Not quite true: See Hugh Daily (13 Sept, 1883). I think Abbott is the only lefty to do it (and the only one to do it in the 20th century).
Otherwise undistinguished athletes with unique accomplishments:
- Mike Witt, only pitcher to pitch one no-hitter as a starter and another as a reliever.
- Gale Gilbert is the only player to appear in five consecutive Super Bowls.
- Eddie Gaedel, a midget who played baseball for the St. Louis Browns in a single 1951 game; had one at-bat and walked as a publicity stunt.
- Don Larsen, only pitcher ever to throw a perfect game in the World Series (and only one to throw a no-hitter in any playoff game until last week)
- Jim Abbott, only one-handed pitcher in Modern Era to toss a no-hitter.
- Fernando Tatis, journeyman outfielder, is the only player to hit 2 grand slams in one inning.
Otherwise undistinguished athletes with unique accomplishments:
- Mike Witt, only pitcher to pitch one no-hitter as a starter and another as a reliever.
- Gale Gilbert is the only player to appear in five consecutive Super Bowls.
- Eddie Gaedel, a midget who played baseball for the St. Louis Browns in a single 1951 game; had one at-bat and walked as a publicity stunt.
- Don Larsen, only pitcher ever to throw a perfect game in the World Series (and only one to throw a no-hitter in any playoff game until last week)
- Jim Abbott, only one-handed pitcher in Modern Era to toss a no-hitter.
- Fernando Tatis, journeyman outfielder, is the only player to hit 2 grand slams in one inning.
- Timmy Smith, running back, holds the record for most rushing yards in a Superbowl (204).
Otherwise undistinguished athletes with unique accomplishments:
- Mike Witt, only pitcher to pitch one no-hitter as a starter and another as a reliever.
- Gale Gilbert is the only player to appear in five consecutive Super Bowls.
- Eddie Gaedel, a midget who played baseball for the St. Louis Browns in a single 1951 game; had one at-bat and walked as a publicity stunt.
- Don Larsen, only pitcher ever to throw a perfect game in the World Series (and only one to throw a no-hitter in any playoff game until last week)
- Jim Abbott, only one-handed pitcher in Modern Era to toss a no-hitter.
- Fernando Tatis, journeyman outfielder, is the only player to hit 2 grand slams in one inning.
- Timmy Smith, running back, holds the record for most rushing yards in a Superbowl (204).
- Alan Shepard, only man to golf on the Moon.
http://www.pasturegolf.com/archive/shepard.htm
Otherwise undistinguished athletes with unique accomplishments:
- Mike Witt, only pitcher to pitch one no-hitter as a starter and another as a reliever.
- Gale Gilbert is the only player to appear in five consecutive Super Bowls.
- Eddie Gaedel, a midget who played baseball for the St. Louis Browns in a single 1951 game; had one at-bat and walked as a publicity stunt.
- Don Larsen, only pitcher ever to throw a perfect game in the World Series (and only one to throw a no-hitter in any playoff game until last week)
- Jim Abbott, only one-handed pitcher in Modern Era to toss a no-hitter.
- Fernando Tatis, journeyman outfielder, is the only player to hit 2 grand slams in one inning.
- Timmy Smith, running back, holds the record for most rushing yards in a Superbowl (204).
- Alan Shepard, only man to golf on the Moon.
- Byron White, only NFL player to sit on the United States Supreme Court
Otherwise undistinguished athletes with unique accomplishments:
- Mike Witt, only pitcher to pitch one no-hitter as a starter and another as a reliever.
- Gale Gilbert is the only player to appear in five consecutive Super Bowls.
- Eddie Gaedel, a midget who played baseball for the St. Louis Browns in a single 1951 game; had one at-bat and walked as a publicity stunt.
- Don Larsen, only pitcher ever to throw a perfect game in the World Series (and only one to throw a no-hitter in any playoff game until last week)
- Jim Abbott, only one-handed pitcher in Modern Era to toss a no-hitter.
- Fernando Tatis, journeyman outfielder, is the only player to hit 2 grand slams in one inning.
- Timmy Smith, running back, holds the record for most rushing yards in a Superbowl (204).
- Alan Shepard, only man to golf on the Moon.
- Byron White, only NFL player to sit on the United States Supreme Court
- Dock Ellis, pitched a no-hitter on LSD.
Otherwise undistinguished athletes with unique accomplishments:
- Mike Witt, only pitcher to pitch one no-hitter as a starter and another as a reliever.
- Gale Gilbert is the only player to appear in five consecutive Super Bowls.
- Eddie Gaedel, a midget who played baseball for the St. Louis Browns in a single 1951 game; had one at-bat and walked as a publicity stunt.
- Don Larsen, only pitcher ever to throw a perfect game in the World Series (and only one to throw a no-hitter in any playoff game until last week)
- Jim Abbott, only one-handed pitcher in Modern Era to toss a no-hitter.
- Fernando Tatis, journeyman outfielder, is the only player to hit 2 grand slams in one inning.
- Timmy Smith, running back, holds the record for most rushing yards in a Superbowl (204).
- Alan Shepard, only man to golf on the Moon.
- Byron White, only NFL player to sit on the United States Supreme Court
- Dock Ellis, pitched a no-hitter on LSD.
- Rennie Stennet, only player in Modern Era to have 7 hits in a 9 inning game
Otherwise undistinguished athletes with unique accomplishments:
- Mike Witt, only pitcher to pitch one no-hitter as a starter and another as a reliever.
- Gale Gilbert is the only player to appear in five consecutive Super Bowls.
- Eddie Gaedel, a midget who played baseball for the St. Louis Browns in a single 1951 game; had one at-bat and walked as a publicity stunt.
- Don Larsen, only pitcher ever to throw a perfect game in the World Series (and only one to throw a no-hitter in any playoff game until last week)
- Jim Abbott, only one-handed pitcher in Modern Era to toss a no-hitter.
- Fernando Tatis, journeyman outfielder, is the only player to hit 2 grand slams in one inning.
- Timmy Smith, running back, holds the record for most rushing yards in a Superbowl (204).
- Alan Shepard, only man to golf on the Moon.
- Byron White, only NFL player to sit on the United States Supreme Court
- Dock Ellis, pitched a no-hitter on LSD.
- Rennie Stennet, only player in Modern Era to have 7 hits in a 9 inning game
- Mario Cuomo, only minor league baseball player for the Pittsburgh Pirates to later serve as Governor of New York
Otherwise undistinguished athletes with unique accomplishments:
- Mike Witt, only pitcher to pitch one no-hitter as a starter and another as a reliever.
- Gale Gilbert is the only player to appear in five consecutive Super Bowls.
- Eddie Gaedel, a midget who played baseball for the St. Louis Browns in a single 1951 game; had one at-bat and walked as a publicity stunt.
- Don Larsen, only pitcher ever to throw a perfect game in the World Series (and only one to throw a no-hitter in any playoff game until last week)
- Jim Abbott, only one-handed pitcher in Modern Era to toss a no-hitter.
- Fernando Tatis, journeyman outfielder, is the only player to hit 2 grand slams in one inning.
- Timmy Smith, running back, holds the record for most rushing yards in a Superbowl (204).
- Alan Shepard, only man to golf on the Moon.
- Byron White, only NFL player to sit on the United States Supreme Court
- Dock Ellis, pitched a no-hitter on LSD.
- Rennie Stennet, only player in Modern Era to have 7 hits in a 9 inning game
- Mario Cuomo, only minor league baseball player for the Pittsburgh Pirates to later serve as Governor of New York
13.Tony Conigliaro–Only playet to come back to major league baseball after recovering from being hit in the eye with a pitched fast ball (WARNING: Very icky photo of the injury).
Next catagory: Celbrities who use three names that are commonly used as first names
- Jamie Lee Curtis
Celbrities who use three names that are commonly used as first names
- Jamie Lee Curtis
- Jennifer Jason Leigh
Celbrities who use three names that are commonly used as first names
- Jamie Lee Curtis
- Jennifer Jason Leigh
- James Earl Ray
Celebrities who use three names that are commonly used as first names
- Jamie Lee Curtis
- Jennifer Jason Leigh
- James Earl Ray
- Gene Anthony Ray
Celebrities who use three names that are commonly used as first names
- Jamie Lee Curtis
- Jennifer Jason Leigh
- James Earl Ray
- Gene Anthony Ray
- Billy Ray Cyrus
Celebrities who use three names that are commonly used as first names
- Jamie Lee Curtis
- Jennifer Jason Leigh
- James Earl Ray
- Gene Anthony Ray
- Billy Ray Cyrus
- Haley Joel Osment
Celebrities who use three names that are commonly used as first names
- Jamie Lee Curtis
- Jennifer Jason Leigh
- James Earl Ray
- Gene Anthony Ray
- Billy Ray Cyrus
- Haley Joel Osment
- Tommy Lee Jones
If Osment is a first name, then so is Jones. 
Celebrities who use three names that are commonly used as first names
- Jamie Lee Curtis
- Jennifer Jason Leigh
- James Earl Ray
- Gene Anthony Ray
- Billy Ray Cyrus
- Haley Joel Osment[sic]
- Tommy Lee Jones[sic]
- Boutros Boutros Ghali
Celebrities who use three names that are commonly used as first names
- Jamie Lee Curtis
- Jennifer Jason Leigh
- James Earl Ray
- Gene Anthony Ray
- Billy Ray Cyrus
[del]6. Haley Joel Osment[sic]
- Tommy Lee Jones[sic]
- Boutros Boutros Ghali [/del]
- Jerry Lee Lewis
People: Please stick with the catagory!
Celebrities who use three names that are commonly used as first names
- Jamie Lee Curtis
- Jennifer Jason Leigh
- James Earl Ray
- Gene Anthony Ray
- Billy Ray Cyrus
[del]6. Haley Joel Osment[sic]
- Tommy Lee Jones[sic][/del]
- Boutros Boutros Ghali
- Jerry Lee Lewis
Ghali is as legit a first name as Leigh. (cite)
Celebrities who use three names that are commonly used as first names
- Jamie Lee Curtis
- Jennifer Jason Leigh
- James Earl Ray
- Gene Anthony Ray
- Billy Ray Cyrus
- Tommy Lee Jones
- John Paul Jones
- Jerry Lee Lewis
I know a couple of Jones
Osment is pretty uncommon but Boutros Boutros Ghali is technically not a 3 name celebrity nor common at all.
Celebrities who use three names that are commonly used as first names
- Jamie Lee Curtis
- Jennifer Jason Leigh
- James Earl Ray
- Gene Anthony Ray
- Billy Ray Cyrus
- Haley Joel Osment[sic]
- Tommy Lee Jones[sic]
- Boutros Boutros Ghali
- John Paul Jones
- Jerry Lee Lewis
- Stevie Ray Vaughan
Unlike some posts I could name, I’ve actually seen Vaughan used as a first name. cite cite cite cite
(Assuming all posts are allowed.)