It's a chant heard echoing through the crowd in Boston when the Toronto Maple Leafs come to town, during those games in which Tyler Seguin thrives and Phil Kessel struggles. "THANK YOU KESSEL!" It's in reference to the Sept. 18, 2009, trade that saw the Boston Bruins trade Kessel, whose restricted free agency forced the deal, to the Leafs for Toronto's 1st (Tyler Seguin) and 2nd (Jared Knight) round picks in 2010 Entry Draft, and Toronto's 1st round choice (highly regarded defenseman Dougie Hamilton) in 2011 Entry Draft. When the chant started in Boston, Seguin said he forced himself not to laugh on the bench. Said Kessel: "I could care less, to tell you the truth. ... It doesn't matter to me one bit." But wherever Kessel goes, the chant will run him down. Or, in one case, gallop after him. "ThankyouKessel" is harness racing horse trained by Joe MacIsaac and his longtime girlfriend, Carolyn Williston, is the owner. The horse runs frequently at Woodbine — located in Toronto, of course. So was this a Leafs' fan tribute to Kessel's efforts on the ice? Of course not. It's a Bruins fan trolling the Leafs, a trait embedded in a Bruins fan's DNA.