He was the host of National Public Radio and WBUR's Only A Game program from its beginning in 1993 to July 2018, covering mainstream and offbeat United States and international sports.
His other books include Only A Game and Keepers, both collections of his radio and magazine work.
Littlefield has also authored three novels, Prospect and The Circus in the Woods, and Baseball Days and Champions: Stories of Ten Remarkable Athletes.
He was the guest editor for Houghton Mifflin’s Best American Sports Writing in 1998, and his essay “The Gym At Third and Ross” was featured in the 2013 edition.
[citation needed] In addition to penning his own books, Littlefield served as the guest editor of the 1998 edition of The Best American Sports Writing.