Girls act a lot like adult men in three :30s for Nike. Each spot features sport-minded girls playing or plotting. Superimposed are the initials of a fictional women's sport league -- the WNFL, WMLB WNHL, over the line "It's only a matter of time." Wieden & Kennedy, Portland, Ore., created the humorous campaign. Hank Perlman of Hungry Man, New York, directed. Copywriter: Allison Forsythe. Art director: Monica Taylor.