The Warriors were outdone by the Raptors in the final score in Thursday's summer league contest, 75-69, at Cox Pavilion in Las Vegas.
But individually, Golden State witnessed positives from its players.
Rookie guard Patrick McCaw was the star of the night, going off against Toronto to finish with a game-high 28 points.
The UNLV product turned second-round pick had 19 first-half points, plus a steal.
By the end of the third quarter, McCaw had 25 pts (9-13 FG), three steals, one block, one rebound and one assist.
Center Ognjen Kuzmic finished with second on the Warriors with 13 points and nine rebounds.
Royce Oneale corralled a team-high 14 rebounds in 31:26 of play.
Thomas Walkup followed up the top two scorers with eight points.
Four players finished in double digits for the Raptors, with guard Norman Powell leading the way with 17 points in just over 24 minutes.
The Warriors next take the floor Friday against the Mavericks at 7pm PT.