FIRST OFF . . .

Orion’s “Platoon” continued its patrol at the number-one position in the box-office race over the weekend, taking in $8.2 million at 1,291 screens nationwide--its widest release so far. The young year’s first “sleeper” hit, 20th Century Fox’s “Mannequin,” starring Andrew McCarthy and Kim Cattrall, stayed ahead of the new Sylvester Stallone film, “Over the Top,” through the two films’ second weekend, outgrossing the Cannon/Warner Bros. arm- wrestling tale $5 million to $3.5 million. (And “Mannequin” is playing at slightly more than half of the theaters “Over the Top” is.) Touchstone’s “Outrageous Fortune” placed third, at $4.6 million, while Fox’s “Black Widow” tallied $2.8 million and Woody Allen’s latest, “Radio Days,” racked up $1.6 million for Orion.