» July 31, 1993:
The Pirates trade P Stan Belinda to the Royals in exchange for pitchers Jon Lieber and Dan Miceli.
» April 30, 1997:
The Giants finish their best April in 24 years (17-7) by beating on the Pirates, 6–1, on Mark Gardner's 3-hit pitching. Jeff Kent's 3rd inning grand slam, off Jon Lieber, gives Gardner all the support he needs.
» December 14, 1998:
The Cubs trade OF Brant Brown, whose error on September 24th almost cost the Cubs a playoff spot, to the Pirates in exchange for P Jon Lieber.
» March 29, 2000: The Cubs open the major league season in the Tokyo Dome in Tokyo, Japan, by defeating the Mets, 5-3, in the first big league game ever played outside of North America. Jon Lieber gets the victory and new ace Mike Hampton takes the loss. Shane Andrews hits the first home run of the new millennium. Mark Grace and Mike Piazza also homer.
» April 21, 2001: Jon Lieber gets his first win and Sammy Sosa hits the first grand-slam at the new PNC Park in Pittsburgh.
» May 24, 2001: The Cubs' Jon Lieber one-hits the Reds, 3-0, ending Cincinnati's NL-record streak of 208 straight games without being shut out. 2B Juan Castro gets the Reds only hit. The efficient Lieber needs only 78 pitches in the game.
» October 3, 2001:
Cubs ace Jon Lieber picks up his 20th win of the season, beating the Reds, 13–7. He's the first Cubs 20-game winner since Greg Maddux in 1992. Sammy Sosa hits a 3-run home run for roundtripper No. 61, as the Cubs score five in the 7th. Sosa pushes his RBI total to 154 to lead the majors. Corey Patterson has four hits for Chicago while Corky Miller homers twice for the Reds. Cubs pitching coach Oscar Acosta resigns from the organization, effective immediately following the game, and will take a job with Texas.