Take a look at Rory McIlroy's highlights from his first round at the Players Championship. (0:56) PONTE VEDRA BEACH, Fla. -- After much uncertainty about whether Rory McIlroy would compete in the Players Championship due to a back injury sustained last week, he shot an opening 2-over 74 and said rustiness -- not his back -- was the bigger issue Thursday. "I would say the most discomfort was like when the ball was below my feet or with chipping. Just like getting down a little bit to it," McIlroy said. "Honestly, overall, it was fine. Got a little bit tired at the end of the day, but yeah, it was actually all pretty good." After withdrawing from last week's Arnold Palmer Invitational with back spasms, McIlroy did not arrive at TPC Sawgrass to defend his title until Wednesday afternoon and tested his back by hitting about 30 balls on the driving range (only going up to a 6-iron) before spending time chipping and putting on the back nine.…