Bucks' latest starting lineup tweak comes with looming question mark

Brooklyn Nets v Milwaukee Bucks | Patrick McDermott/GettyImagesKevin Porter Jr.'s return allowed the Milwaukee Bucks to roll out a new starting lineup, but like many of them this season, it's smaller. With Porter and Ryan Rollins in the backcourt, AJ Green finds himself at small forward, a position where he typically guards bigger players. It worked out well in Milwaukee's win over the Brooklyn Nets, but is it sustainable in the long term? That's the question at hand.

Playing undersized has plagued Bucks at times this season

Green has proven that he's a capable starter this season, but the defense has stirred trouble at times. Standing at 6-foot-4, the wing oftentimes finds himself looking up…