So you would like to use your smartphone to capture baseball games and practice sessions? The VGSION Fence Mount for iPhone & GoPro can help. It comes with two phone clips, so you can mount your phone and use a power bank to keep it going longer.
The VGSION Fence Mount is compatible with GoPro, DJI Action cam, Insta360 One RS, and various iPhone and Android smartphone models. Its universal arm supports 360-degree rotation.[where to get it]