NBA Jam Tournament Edition

Players

$11/F995-$11/FAE8 Lower word of each portrait pointer (2 bytes per player; ordered by player value).
$11/FAE9-$11/FC3C Upper word (bank byte) of each portrait pointer (2 bytes per player; A bank byte in RAM ($7F) means the portrait is compressed).

Notes: Each player portrait is 0x6D0 bytes long. The first 0x690 bytes are the graphics data, which are in a unusual 5BPP planar composite format. The last 0x40 bytes are for the portrait's 32-color palette (in the SNES' standard 15-bit BGR format).

$44/8121-$44/83C8 Player name sprite pointers (4 bytes per player; ordered by player value).

Teams

$29/A231-$29/A26A Relative offsets for $29/A26B (in order by team value)

$29/A26B-$29/A2A4 Relative pointers to each team's roster data (added to $16/98CF; in alphabetical order by team name, except All-Stars and Rookies are the last two).
$16/98CF-$16/A1DE Roster data (0x50 (80) bytes reserved for each team; 29 teams).

Notes: #$FFFE designates the end of a team's combo data if the team has less than 20 pairings.
#$8000, when added to the second byte of the first player value in a combination, designates the first pair in the expanded roster of the team.
(e.g.: 1A 80 53 00 is the first hidden combo of the Boston Celtics: Dominique Wilkins/Xavier McDaniel. Changing the 80 to 00 would allow you to access all of Boston's hidden players without beating the 27 NBA teams.)

$3F/B8CF-$3F/C9F8 Player definition data (0x1A bytes per player).
These structures define all of the in-game attributes of a player, including their appearance, strengths and weaknesses. Or, more specifically:

Bytes 00-01: Player value
Bytes 02-03: Body size flag
  #$0000: Tall (height >= 6'4")
  #$0001: Short (height < 6'4")
Bytes 04-05: Speed rating
  #$13F8?: 0 
  #$1455: 1 
  #$14A7: 2 
  #$14FA: 3
  #$154C: 4
  #$159F: 5
  #$15F1: 6
  #$1644: 7
  #$1711: 8
  #$1777: 9
  #$17DE: 10
Bytes 06-07: 3-point rating
  #$02BC: 0
  #$02EE: 1
  #$0320: 2
  #$035C: 3
  #$03A2: 4
  #$03CA: 5
  #$0410: 6
  #$044C: 7
  #$0460: 8
  #$0492: 9
  #$04E2: 10
Bytes 08-09: Dunk rating (0000-000A)
Bytes 0A-0B: Block rating (0000-000A)
Bytes 0C-0D: Steal rating (0000-000A)
Bytes 0E-0F: AI Level
  #$FFF5: Dallas
  #$FFF6: Minnesota
  #$FFF7: Miami
  #$FFF8: Washington
  #$FFF9: Philadelphia
  #$FFFA: Sacramento
  #$FFFB: Denver
  #$FFFC: Milwaukee
  #$FFFD: Indiana
  #$FFFE: Atlanta
  #$0000: Boston, Charlotte, Cleveland, Golden State, L.A. Clippers, New Jersey
  #$0001: Detroit, L.A. Lakers, San Antonio
  #$0002: New York, Orlando, Seattle, Utah
  #$0003: Phoenix, Portland
  #$0004: Chicago
  #$0005: Houston, Rookies not assigned to a team, Secret Players
Bytes 10-11: Pass rating (0000-000A)
Bytes 12-13: Power rating (0000-000A)
Bytes 14-15: Clutch rating (0000-000A)
Bytes 16-17: Skin color pointer
  B775: black duplicate(unused)
  B77F: black
  B789: white
Bytes 18-19: Head graphic pointer
  B793: Brad Lohaus (NBA Jam)
  B797: White Skin/Black Hair
  B79B: White Skin/Black Fade
  B79F: Tan Skin/Black Hair
  B7A3: White Skin/Red Fade
  B7A7: Black Skin/Black Hair
  B7AB: James Worthy/Horace Grant
  B7AF: Black Skin/Bald
  B7B3: Black Skin/Black Fade
  B7B7: Black Skin/Balding
  B7BB: Black Skin/Bald/Goggles (Unused)
  B7BF: Dennis Rodman
  B7C3: Vlade Divac (NBA Jam)
  B7C7: Stacey Augmon, Dell Curry
  B7CB: Isiah Thomas (Unused)
  B7CF: Robert Horry
  B7D3: Isaiah Rider (Unused)
  B7D7: Todd Day
  B7DB: Benoit Benjamin (Unused)
  B7DF: John Starks
  B7E3: Charles Oakley
  B7E7: Derek Harper
  B7EB: Nick Anderson (Intended to be A. Hardaway?)
  B7EF: ? (Unused)   (Intended to be N. Anderson?)
  B7F3: Clarence Weatherspoon(Unused)
  B7F7: Gary Payton
  B7FB: Isaiah Rider, Cedric Ceballos (Beta)
  B7FF: Vernon Maxwell
  B803: Larry Nance (Beta)
  B807: Kevin Willis, Alonzo Mourning, Sean Rooks
  B80B: Joe Dumars
  B80F: Small/White Skin/Black Hair
  B813: Small/White Skin/Black Fade (Unused)
  B817: Small/Tan Skin/Black Hair (Unused)
  B81B: Small/Black Skin/Black Hair
  B81F: Small/Black Skin/Bald
  B823: Small/Black Skin/Black Fade
  B827: Small/Black Skin/Balding (Unused)
  B82B: Scott Skiles
  B82F: Tony Goskie
  B833: John Carlton
  B837: Jamie Rivett
  B83B: Sal DiVita
  B83F: Shaun Liptak
  B843: Mark Turmell
  B847: Larry Bird
  B84B: Dan Feinstein
  B84F: Eric Samulski
  B853: Eric Kuby
  B857: Jazzy Jeff
  B85B: Heavy D
  B85F: Scott Scheno
  B863: Alex de Lucia
  B867: Jay Moon
  B86B: Wes Little
  B86F: Asif Chaudhri
  B873: Brett Gow
  B877: Chris Kirby
  B87B: Steve Snake
  B87F: Carol Blazekowski
  B883: Benny
  B887: Hugo
  B88B: Crunch
  B88F: Suns Gorilla
  B893: Bill Clinton
  B897: Prince Charles
  B89B: Jason Falcus
  B89F: Mad Mike Muskett
  B8A3: Neil Ziggy Hill
  B8A7: Darren Hodgson (Steven Tyler placeholder)
  B8AB: Stud Muffin
  B8AF: Moosekat
  B8B3: Fresh Prince
  B8B7: Frank Thomas
  B8BB: Randall Cunningham
  B8BF: Mike D
  B8C3: Adrock
  B8C7: MCA
  B8CB: Hillary Clinton

$12/B0C9-$12/B8C8 On-screen stat ratings (0x10 bytes per player; players are in the same order as the player definition data, except ratings for the secret players do not exist (the last player is Glenn Robinson)).

Note: The ratings themselves are in the same order as what you see on the screen: Spd, 3pts, Dunk, Pass, Power, Steal, Block, Cltch.

Player Definition data order:

Information collected and organized by Mattrizzle.