Wintrust's sports marketing shopping spree is still going. On the heels of a major new sponsorship deal with the Chicago Cubs and bolstering a relationship with the Chicago White Sox, the Rosemont-based lender signed a deal this month to be the presenting sponsor of the Chicago Yacht Club's Race To Mackinac in July. The one-year agreement, which has renewal options for the next two years, includes putting the Wintrust name on boat flags and at both ends of the race, as well as branding on the site where people can follow the race online. Wintrust also will sponsor the yacht club's annual charity cruises. Financial terms of the deal were not disclosed, but previous lead sponsors of the race have paid in the low to mid-six figures, according to sources close to the deals. The "Mac," as it's commonly known, is a two- to three-day, 333-mile race from Chicago to Mackinac Island, Mich., and is heading into its 107th edition this summer.