Zach Hicks led the charge with 20 points and six three-pointers.
Baldwin has tallied 84 steals this season, which is the fourth-best in the country.
Penn State opens the first round of the Big Ten Tournament on Wednesday night against Michigan on Peacock.
The Nittany Lions take on Michigan in a rematch of The Palestra game in the opening round of the Big Ten Tournament.
John Kerr's match-high 21 kills were not enough to beat the Trojans in Los Angeles.
The Nittany Lions coughed up a 23-point lead in the final road game of the regular season.