Linuxuser, you need to be aware of that your regex will trigger if you enter, say, 93. You need to make sure it ends at the single digit number 9 by adding the dollar sign at the end:

/(cricket2011|cwc[0-9])$/i

and you may want to make it case insensitive so it will recognize the cricket2011 command if a user enters it with one uppercase letter in it. Regex by design is case sensitive until you specify the /i modifier or (?i) switch. While you can get away without using the delimiters / / at both ends, it's a best practice that you do when dealing with regex. You can incorporate the regex into the match-text section of the text event and then add the $ prefix to indicate that it's a regex match. You can also add the /S modifier to it to strip control codes. This modifier is designed for mIRC only and not a standard one in regex.