The defenseman attempted to have the trade overturned, and subsequently said through his agent that he wanted to play this season with HC Slovan of the Kontinental Hockey League.

WSJ: Miller makes 41 saves in Sabres' win over Isles

Clowe, also acquired at the trade deadline, will be an unrestricted free agent, and young forwards Derek Stepan, Carl Hagelin, Mats Zuccarello, along with key defensemen Moore and Ryan McDonagh are heading into restricted free agency.

WSJ: Rangers face questions after 2nd-round ouster

With the Mariners in last place in the AL West, Ichiro had his agent, Tony Attanasio, ask Seattle management to trade him to a contender during the All-Star break.

FORBES: Exit Jeremy Lin. Enter Ichiro Suzuki To New York City's Sports Market

Sugarscape is not the only agent-based model that has started to explore the pattern of trade.

ECONOMIST: Social science

Most recently a little-used reserve center for the Washington Wizards after a midseason trade from the Boston Celtics, the 7-foot Collins is a free agent who can sign with any team.

NPR: 'I'm Gay': NBA Player Jason Collins Breaks Barrier