There is an excellent baseball simulation game available that is native Linux. It is called Out of the Park Baseball, and I have been running it flawlessly on Sabayon 4.2 for over a year.
If you love baseball, you owe it to yourself to give this a look. As it is a native Linux application, there is no need for Wine or any other workarounds. So some support for developers that spend time to give us games on Linux.
It is easily found by searching for "OOTP". It is definitely worthwhile.