Chad Baker-Mazara capped his 25-point night by sinking a step-back 3-pointer with 66 seconds remaining and No. 24 Southern California beat Oregon 82-77 on Tuesday in the Big Ten opener for both teams at Eugene, Ore.USC (8-0, 1-0 Big Ten), playing its second consecutive game without injured Rodney Rice, rallied around key contributions from Baker-Mazara, Jacob Cofie and Ezra Ausar.Cofie scored 16 of his 17 points in the first half to buoy the Trojans against a strong start for Oregon (4-4, 0-1), while Ausar scored all 13 of his points in the second half.Baker-Mazara was the constant for USC throughout the night, scoring 12 in the first half and 13 in the second. He shot just 2-for-7 from 3-point range, but his second make from long distance was pivotal.The Ducks took their fourth consecutive loss despite getting 23 points and nine rebounds from Kwame Evans Jr.The Trojans led for much of the second half, but not by more than six points until the closing minute.Baker-Mazara faked a drive toward the lane, pulled back and fired from near the top of the key, pushing USC’s lead to 78-73 after Oregon missed a prime opportunity to force a tie.Ducks guard Takai Simpkins, attempting a 3-pointer from the wing with Oregon trailing 75-72, drew contact from Ryan Cornish. Simpkins missed the first and third of his three free-throw attempts, continuing the Ducks’ second-half struggles at the charity stripe.