This account of the four baseball seasons of 1900 through 1903 seeks to capture the flavour of the period by providing yearly overviews from the standpoint of each team and by focusing more deeply on 30 or more players of the era - not only such legendary stars as Cy Young and Willie Keeler, but also relative unknowns such as Bill Keister and Kip Selbach. Each team section is supplemented by a table providing the significant batting and pitching statistics for each regular team member. The major theme of the period was the baseball war between the National and American leagues from 1900 to 1903. But the broad multiseason, multiteam view allows varying the focus. The pennant races receive due attention but there are other aspects of the baseball drama, such as: the aging star who finds a way to extend his period of dominance (Cy Young); the young, unpolished phenom whose raw talent enables him to excel (Christy Mathewson); and the fierce competitor who risks injury to help his team (Joe McGinnity and Deacon Phillippe).

The early Deadball Era featured landmark achievements, great performances by several of baseball's immortals, and the presence of a delightful array of characters. John McGraw won his first pennant as a manager and repeated the following year with the team he later called his greatest. His Giants were highly praised for their playing ability and widely criticized for their rowdy behavior. Meanwhile the Cubs were putting together the greatest team in franchise history, emphasizing speed on the bases, solid defense, and outstanding pitching. Jack Chesbro won 41 games in 1904 employing a new pitch, the spitball. Other pitchers began using it, accelerating the trend toward lower batting averages. The White Sox entered baseball lore as the "Hitless Wonders," winning the 1906 pennant through adroit use of "scientific baseball" tactics. Each team had its own story and memorable players. For instance, Cardinals fans enjoyed the last years of under-appreciated Hall-of-Famers Kid Nichols and Jake Beckley. In Detroit fiery young Ty Cobb fought opponents and teammates alike, while Germany Schaefer brought chuckles with his zany antics. Elsewhere, slugging Charlie Hickman, speedy Billy Maloney and curmudgeonly Jack Taylor brought cheers and jeers with their distinctive talents and personalities.