The baseball game turned into a 'duel' between the teams' pitchers. = The game turned into a pitching 'duel'.
Legislators 'dueled' over the tax increases.
The two runners 'dueled' for the lead.
(..) Yeah. Astonishing what a few drops of your blood will do, eh, Harry? Pick up your wand, Potter. I said, pick it up! Get up! Get up! You've been taught how to duel, I presume, yes? First, we bow to each other. Come on, now, Harry. The niceties must be observed. Dumbledore wouldn't want you (..)2005 Harry Potter and the Goblet of Fire