Hideki Matsuyama has withdrawn from the BMW Championship due to a recurring lower back injury. Despite an impressive first round of 5-under 67 and sitting just one stroke off the lead, the injury forced him to exit before the second round. This withdrawal follows his victory at the FedEx St. Jude Championship and leaves his participation in the upcoming Tour Championship uncertain. Matsuyama's injury history includes previous withdrawals, notably from the BMW Championship last year. Currently third in the FedEx Cup standings, his absence may allow other competitors to surpass him. Scottie Scheffler also experienced back pain during the BMW Championship but continues to play.