The expansion of the partnership with SidelineSwap indicates DICK'S Sporting Goods' commitment to the resale market, which is growing in popularity among consumers seeking sustainable options. This strategic move is likely to attract environmentally conscious shoppers, enhance customer loyalty, and open up new revenue streams for DICK'S Sporting Goods. Given the increasing consumer interest in sustainability and the growing market for resale goods, this partnership expansion is expected to have a positive short-term impact on DICK'S Sporting Goods' stock price.