Rory McIlroy struggles to maintain momentum at Bellerive during the BMW Championship's second round, adding just one stroke to his score with a 69. Meanwhile, JJ Spaun emerges as the leader, establishing a commanding position atop the leaderboard. McIlroy's sluggish performance marks a significant shift in form, prompting him to return to the practice range for technical adjustments. The American golfer's aggressive play demonstrates the competitive intensity of this elite PGA Tour event, setting up an intriguing weekend battle.

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