Rory McIlroy says a bit of "good work" with his team helped him rediscover his form and take a clubhouse lead in the first round of the BMW Championship. The world number two had laboured to an eight-over finish at last week’s St Jude Championship. Key points and original sources are listed below.

• Rory McIlroy says a bit of "good work" with his team helped him rediscover his form and take a clubhouse lead in the first round of the BMW Championship.S1

• The world number two had laboured to an eight-over finish at last week’s St Jude Championship.S2