AUBURN HILLS, Mich. >> Marcus Morris scored 25 points and tipped in the winning basket at the buzzer, leading the Detroit Pistons to a 113-112 victory over Washington on Saturday night for their third straight win.Reggie Jackson had 19 points and eight assists, while Tobias Harris added 18 points and nine rebounds for the Pistons, who let a 16-point lead slip away in the fourth quarter before Morris' big bucket.