The 1884 team was led by ace pitcher Charles "Old Hoss" Radbourn (sometimes spelled Radbourne), who won a record 60 (59, according to some sources) games that year and led the Grays to the pennant. When the team's other star pitcher, Charlie Sweeney, defected to the rival Union Association league in July, it looked like the Grays' season was doomed, but "Old Hoss" offered to pitch the rest of the team's games. The Grays went on a 20-game winning streak and topped the league ahead of their New England rivals, the Boston Red Stockings.