Fans of minor league baseball and Kraft Singles American cheese can double their fun this summer. The Tuesday Night Tickets promotion delivers one free ticket with the purchase of a ticket and the redemption of any Kraft Singles package wrapper at the box office. The plastic wrappers are collected by TerraCycle and made into consumer products. This is the third season of the promotion by Kraft Foods, Northfield, Ill. It said that in 2010, wrapper redemption increased 43% compared to 2009. The promotion runs through Sept. 6.