MLB free agency: 7 best relief pitchers still available
Best relievers in White Sox history
Pitchers' Swings, and Their Throws, Keep Cubs Rolling Past Giants - The New York Times
Chicago Cubs no-hitter of L.A. Dodgers was a surprise to bullpen
Cubs add closer Craig Kimbrel and Dodgers get company in N.L. pennant race - Los Angeles Times
A Trio of Lefty Relievers Who Could Fit for the Cubs: Bummer, Hand, Suter - Bleacher Nation
Indians, Cubs benefiting from deadline trades with Yankees – New York Daily News
The Top 10 Closers in Chicago Cubs Franchise History, News, Scores, Highlights, Stats, and Rumors
Mariano Rivera, Trevor Hoffman and MLB's memorable closers - Sports Illustrated
Former Cubs pitcher, Hall of Famer Bruce Sutter dies at 69 – NBC Sports Chicago
Jeremiah Estrada Already Looks Like Best Homegrown Cubs Reliever in Recent History - Cubs Insider
Tigers all-time best relief pitchers
Chicago Cubs: Assembling our very own all-time Hall of Very Good team
Chicago Cubs BCB After Dark: Deciding the fate of the bullpen - Bleed Cubbie Blue