 Brush's health deteriorated quickly after becoming majority owner in 1902, as he suffered from locomotor ataxia, a nervous system affliction, as well as rheumatism.The Giants won another pennant in 1911, the same year in which he oversaw the reconstruction of the Polo Grounds.Brush attended World Series games as the team again advanced in 1912, but his failing health was apparent, particularly in the aftermath of an auto accident that September 11 in which his car was struck by a truck and overturned, causing two broken ribs.