Sentence:  New York baseball commissioner Bowie Kuhn, rolling up his sleeves and <WSD>coming out swinging</WSD> for the first time Monday, bluntly told Pete Rozelle to quit "kidding the people" about football being the nation's no. 1 sport. 
Meaning of the word marked with <WSD> tags:  To initiate an encounter or interaction by behaving in an unrestrainedly aggressive, confrontational, or accusatory manner.