April 27
At Buenos Aires, Argentina (HBO): Sergio Martinez vs. Martin Murray, 12 rounds, for Martinez's lineal/WBC middleweight title
At Ontario, Calif. (HBO): Cristobal Arreola vs. Bermane Stiverne, 12 rounds, WBC heavyweight eliminator
At Brooklyn, N.Y. (Showtime): Danny Garcia vs. Zab Judah, 12 rounds, for Garcia's WBC/WBA junior welterweight title; Peter Quillin vs. Fernando Guerrero, 12 rounds, for Quillin's WBO middleweight title; Daniel Jacobs vs. Keenan Collins, 10 rounds, middleweights
At Sheffield, England (Showtime, same-day tape): Amir Khan vs. Julio Diaz, 12 rounds, welterweights
There are five good fights on television on Saturday, and -- time permitting -- coverage of a sixth bout that is of interest in the boxing community.
Rather than post one long preview of all the boxing matches, I thought that I'd attach a post on each for this thread, after beginning with the schedule here, in the OP.
2013 has gotten off to an outstanding start in the Great Sport. I expect that Saturday's bouts will continue the high-quality fights that we've been seeing.