White Sox fans have been treated to a pair of no-hitters by Mark Buehrle in recent years, one of them a perfect game on July 23, 2009. The latter is one of only 18 major league perfect games thrown since 1900.
↵↵But these events are fairly rare in Chicago; there were five no-hitters thrown in 2010 (and it should have been six, after the Tigers' Armando Galarraga had a perfect game taken away by a bad umpiring call), none of them thrown in Chicago or for or against either Chicago team.
↵↵Before Buehrle's first no-no on April 18, 2007 against the Texas Rangers, the last no-hitter thrown in Chicago was by Detroit's Jack Morris against the White Sox on April 7, 1984. No White Sox pitcher had thrown one in Chicago until Buehrle since September 10, 1967, when the Sox righty capped off his best major league season by no-hitting the Tigers in the first game of a doubleheader.
↵↵Meanwhile, these events are even rarer involving the Cubs. Carlos Zambrano's no-hitter on September 14, 2008 happened in Milwaukee -- the first-ever neutral-site no-hitter, against the Astros. Cubs pitchers threw five no-hitters at Wrigley Field from 1955 through 1972, by Sam Jones, Don Cardwell, Ken Holtzman, Burt Hooton and Milt Pappas -- but none since, and only two visiting pitchers have ever thrown a no-hitter there, Fred Toney of the Reds in 1917 and Jim Maloney, also a Cincinnati pitcher, in 1965.
↵↵So if you were at Tuesday night's game and saw Francisco Liriano's no-no, consider yourself lucky even if you're a Sox fan. Your team may have lost, but you witnessed a rare part of baseball history.