With major question marks around McIlroy , the last major of the season is completely wide - open .
Rory McIlroy enters as the defending champion , but he has n't played competitively since rupturing a ligament in his ankle .
With major question marks around Rory McIlroy , the last major of the season is completely wide - open .
Rory McIlroy enters as the defending champion , but he has n't played competitively since rupturing a ligament in his ankle .