Originally Posted by Commodore
Sisko, however, was too busy dealing with the Dominion (the war was actually just ramping up to full pitch at that point), so Worf went in his stead...
so, Sisko's priority was DS9 and the Dominion. Worf and O'Brien were his most combat-experienced officers, but Worf held the highest rank so he got the gig.
case closed I guess. cheers.