The challenge: which company's team will finish faster in the SMU Cox Corporate Relay Challenge at MetroPCS Dallas Marathon this Saturday. (The better bet may be who doesn't have icicles hanging from their nose.) The wager was sealed when JLL executive chairman for the Americas Roger Staubach (right) accepted a challenge from Behringer Harvard CEO Bob Aisner. Each company will send a team to compete and the team finishing with the faster time will win the challenge. If JLL wins, Bob (a passionate Red Sox fan) must wear Roger's No. 12 Cowboys jersey to the company's Addison offices. If Behringer Harvard wins, Roger will suit up in a Red Sox jersey for a day at the JLL offices. Roger says he accepted Bob's challenge because healthy competition is good for the soul, and in this case, it's also good for our community. Bob tells us he hopes this inspires other executives to extend similar challenges.