Brookfield, Wisconsin. Jeff's Sports Inc. specializes in sports memorabilia for collectors, including a full line of sports autograph memorabilia. Founded in 1983 by Jeff Lemieux, Jeff's Sports has maintained a reputation of excellent quality and service in the sports memorabilia marketplace. With every autographed item of sports memorabilia, Jeff provides a tamper-proof hologram and Certificate of Authenticity. Jeff's Sports is proud to offer a wide selection of Green Bay Packer autographed merchandise.