Unfortunately yes, I went yesterday to try but ended September 30 and rebate had to be mailed prior to October 15th according to form. Only consolation was Meijers had a sale price of $7.59 which Dick's matched.
The "2nd Chance" rebate started October 1st and runs until December 31st. If you submitted a rebate during the 1st rebate offer which ended Sept 30th, you can mail a 2nd rebate for qualified purchases during the "2nd chance" rebate offer. It requires a different rebate form and the correct rebate form is titled "2nd chance".