I've face guarded hundreds of guards. I never once did it with my fingers extended. Why? Because it would not work to restrict a players court vision.....unless your intention was to poke him in the eye. I have never had another guard face guard me with their fingers extended. I've had a lot of close calls with players swiping at the ball. Face guarding a player that's 10 feet from the basket, as Trimble was, is not remotely effective either and is not something I have ever seen coached. If Trimble was going to rise up for a jumper, the face guard would be useless. Ever 4/5 that's ever been coached is taught to put both hands straight up or try and block the shot. No 7'1 Center in the history of basketball, has ever been coached to face guard a 6'3 PG as a means of defense in the lane. I shouldn't think it's even necessary to explain that.