Translation:My older brother is good at baseball.
There is no single word that means all three. However, there are many words in Japanese that have pronunciations in common. In the case of きゅう (which I think is what you're referring to), that includes 九 "nine" , 級 "grade" , 急 "suddenness/swiftness" and several others. But baseball = やきゅう（野球, literally "field ball/sphere"）