I was looking around the Konami web site when I found this baseball papercraft, it's from a long running video game series in Japan called Jikkyo Powerful Pro Yakyu (Live Powerful Pro Baseball) or Power Pro for short. It was created by Konami originally for the Super Famicom but has also landed on other console platforms such as the Sega Saturn, PlayStation, Nintendo 64, PlayStation 2, Dreamcast, GameCube, and more recently, the Nintendo Wii. They also had a version of the game for the handheld systems called Power Pro-kun Pocket, this one was available for the Game Boy Color, Game Boy Advance, Nintendo DS, and the PlayStation Portable.
The character design on the game has a comic feel to it, they are shown as having a very wide head with no mouth, nose, ears, and hair - only eyes. They have a body with arms and hands (fingerless) attached, and feet with no legs. This characteristic is applied to the baseball papercraft pictured above.
To download the pattern, head to the bottom of the page to find the download link. You can check the photo below for a visual guide.