The two major British sporting goods retailers are likely to get a little boost from the Olympics in London, according to Verdict Research. Sports Direct's share of the total U.K. clothing market is predicted to increase by 0.2 percentage points to 1.8 percent, and its share of the footwear market should rise by 0.5 percentage points to 7.9 percent. JD Sports Fashion's share of the clothing market may remain flat at 1.5 percent, while its share in footwear should climb by 0.1 percentage points to 0.6 percent.