Redsoxtix.com

Purchase Red Sox tickets online for ALL home games @ Fenway Park 24 hours a day
http://www.redsoxtix.com

Dodgerwatch Ticket Exchange

forum for fans to buy, sell, or exchange Dodger tickets
http://www.bigbob.com/dodgerwatch/

San Francisco Giants Tickets

Offers seating for home games at Pacific Bell Park.Individual tickets, group seating and ten-game plans.
http://www.infieldadvantage.com/index.html

Arizona Diamondback Vssinc

Diamondbacks season ticket holder selling 4 tickets to many regular season games.
http://www.vssinc.com/dbacks/dbackpage.htm

Major League Baseball

Official site: offers tickets.
http://mlb.mlb.com/NASApp/mlb/mlb/tickets/mlb_tickets_entry.jsp

Arizona Diamondbacks Megala

Diamondbacks season ticket holder selling 2 tickets to many regular season games.
http://www.megala.net/diamondbacks/

San Francisco Giants

Lower Box 123 Row 30 Seats 5 and 6 offered for sale.
http://home.pacbell.net/bearsf/?

Ivy League Baseball Club

Chicago Cubs - one of the rooftops across from Wrigley Field. Offering catered menu and open bar.
http://www.ivyleaguebaseballclub.com

eSellOut

Sells baseball tickets including the Yankees and Athletics.
http://www.esellout.com

Brixen Ivy

Chicago Cubs - Wrigleyville Rooftop Baseball Parties
http://www.brixenivy.com

Beyond The Ivy

Chicago Cubs - Offers two different rooftops on Waveland Avenue
http://www.beyondtheivy.com