Welcome to SportsNation! On Tuesday, we're going inside the boxing ring when legendary trainer Nacho Beristain stops by to chat about his pupil Juan Manuel Marquez' fourth fight against Manny Pacquiao, which is set for December 8.

Marquez (54-6-1, 39 KO) takes on Pacquiao (54-4-2, 38 KO) for the second time in a year on Dec. 8. MGM Grand Garden Arena in Las Vegas will host the bout, which will air live on HBO PPV.

Beristain, a 2011 inductee to the International Boxing Hall of Fame, has trained 18 championship fighters in his career that has spanned more than four decades. A native of Mexico, Beristain also helped train the 1968, 1976 and 1980 Mexican Olympic teams.

Send your questions now and join Beristain Tuesday at 12:30 p.m. ET!

More Special Guests: Previous chats | SportsNation

Go to chat »