The best you've ever seen...

Here's the template...

Baseball:
Football:
Basketball:
Hockey:
Boxing:
Tennis:
College football:
College basketball:
High school basketball:
High school football:

 

Shouldn't those colons be ellipses?

 

Outstanding.

 

Here's the template...

Baseball: Barry Bonds
Football: Joe Montana
Basketball: Michael Jordan
Hockey: Wayne Gretzky
Boxing: Mike Tyson
Tennis: Roger Federer
College football: Barry Sanders
College basketball: Christian Laettner
High school basketball: Jason Kidd
High school football: Todd Marinovich

 

Baseball: Pedro Martinez
Football: Walter Payton
Basketball: MJJ
Hockey: Chris Chelios
Tennis: Steffi Graf
High school basketball: Kevin Garnett
High school football: Michael Turner

 

Seen live, in person? That sort of narows it down for we poor folk. Seesm like it should be, or we'll get a combination of the same answers, and homer answers.

Baseball: Barry Bonds/Ken Griffey Jr. in his prime
Football: Emmitt Smith
Basketball: Magic Johnson
Hockey: Wayne Gretzky
Boxing: Roy Jones Jr. (only been to one pro boxing match)
College football: Reggie Bush
College basketball: Bob Knight
High school basketball/High school football: Hell, I don't know. Probably some kid from Long Beach Poly or Dominguez.
Soccer: (That's right, SOCCER): Roberto Baggio

 

Not knowing the limits of this, I'm going with players I've seen compete in person ...

Baseball: Barry Bonds
Football: Barry Sanders or Brett Favre
Basketball: Michael Jordan
Hockey: Joe Sakic
Boxing: Tim "The Doughboy" Tomaczek ... aka George Foreman's "Help Me" punching bag
Tennis: Venus Williams
College football: Ron Dayne, Wisconsin
College basketball: Tony Bennett, UW-Green Bay
High school basketball: Tony Bennett, Green Bay Preble
High school football: Joe Thomas, Brookfield Central

 

Baseball: Pedro Martinez
Football: Jerry Rice
Basketball: Michael Jordan
Hockey: Bobby Orr
Boxing: Muhammad Ali
Tennis: Steffi Graf
College football: OJ Simpson
College basketball: Lew Alcindor
High school basketball: LeBron James
High school football: Dana Barros

 

Baseball: Felix Hernandez
Football: Randy Moss (in college)
Basketball: Alonzo Mourning
Hockey: Alex Ovechkin and Jaromir Jagr
Tennis: Pete Sampras
College football: Randy Moss
College basketball: Wally Sczerbiak (I went to a MAC school, dammit!)
High school basketball: Recina Russell and Shyra Ely
High school football: Steve Weatherford

 

Great minds, eh?

 

Baseball: Barry Bonds
Football: Lawrence Taylor
Basketball: Michael Jordan
Hockey: Wayne Gretzky
Boxing: Muhammad Ali
Tennis: Roger Federer
College football: Bo Jackson
College basketball: Lew Alcindor