The AP reports: JaVale McGee, Washingtonā€™s first-round draft choice out of Nevada-Reno, had 20 points and eight rebounds Wednesday night to lead the Wizards to a 89-80 preseason victory over the Memphis Grizzlies. McGee shot 8-for-12 from the field for Washington. Andray Blatche scored 14 points and DerMarr Johnson had 11… Rudy Gay scored 21 points on 5-for-19 shooting for Memphis, winless in two games. Hakim Warrick added 16 points, but was 3-for-9 as the Grizzlies shot 35 percent on the night. Greg Buckner finished with 11 for Memphis and rookie Marc Gasol had 10. Meanwhile, O.J. Mayo, the third-overall pick from Southern Cal, connected on 3-of-11 from the field for Memphis and finished with seven points.