Tim Cowlishaw, sports columnist for SportsDayDFW.com and The Dallas Morning News, author of Drunk on Sports and panelist on ESPN's "Around the Horn," answered questions about the Cowboys, Rangers, Mavericks, Stars and college sports in his weekly reader mailbag. Here are some highlights:Question: What are the best/worst-case scenarios for the Mavs in the draft?Tim Cowlishaw: Until May 15, when we know where they pick, that's impossible to say.