I was wondering if it is possible to train an AI that can play outdoor games like cricket, badminton etc. I am new to AI, so if this question is dumb please bear it.
Yes it is possible.
A group of Chinese college students and teachers made a robot that plays badminton. I am sure someone will make a robot that can play cricket and other outside games.
Although not an outdoor game, Omron made a robot named Forpheus that plays ping pong. There is also a robot that plays the sport of curling.
There is an annual event called the RoboCup where robot teams compete in indoor soccer on a scaled down level. They don't look like they will be beating humans in the next couple of years but it is interesting to watch. Their web site is: http://www.robocup.org/
There are a few challenges that remain to be resolved for robots to play humans in sports. The biggest one is self-contained power that will last long enough to play a game. It takes a lot of power to move a human scaled robot and run its electronics, sensors, and computers. Other challenges are dexterity and agility. There have been some advances in these areas as this video shows.
AI is best expressed as an autonomous agent, it could be a robot or a piece of software, An agent is anything that perceives things (perhaps imperfectly) about its environment and can then make a decision to execute some actions which will have some (perhaps unpredictable) effect on the environment.
agents will maintain some internal representation of what they believe the world looks like. As new information arrives, they can update those beliefs and select the best action in response to their beliefs about the state of the world. The Agent Model of Intelligence
To change your perspective on AI, check "OpenAI Gym", its a platform for reinforcement learning research released by OpenAI On April 27, 2016.