Matsuyama leads by one after course record
Hideki Matsuyama shot a course-record 63 at Medinah on Friday to lead the BMW Championship by one shot after round two.
The 27-year-old carded nine birdies in an error-free round and sits on 12-under par, one stroke clear of a pair of Americans, with Patrick Cantlay and Ryder Cup star Tony Finau tied for second on -11.
As conditions continue to be conducive to low scoring, 62 players are under par at the halfway stage but it is Japan's Matsuyama that they will all be chasing down over the weekend.
There is no cut in the FedEx Cup's penultimate event and so there is the possibility for someone to come from the chasing pack with a stellar weekend.
Justin Thomas is in contention to challenge after adding a 69 to his opening 65 in Ohio, while six players including Lucas Glover and Xander Schauffele, are grouped together on -9.
US stars dominate the business end of the leaderboard but Rory McIlroy and Tommy Fleetwood are flying the European flag at -8 alongside Kevin Tway and Kevin Kisner.
Six players reached seven-under after 36 holes, including Spain's Jon Rahm and US ace Rickie Fowler, but the news is not so good for Tiger Woods.
The 15-time major winner advanced to the Tour Championship last year before winning the season finale in spectacular fashion, but is unlikely to make it this time around.
Only the top 30 in the points list go on to play in Atlanta next week and the 43-year-old is currently projected to end up 45th on Sunday, with back-to-back 71s seeing him on -2.
He has time to do something about that but it will be tough.
Brooks Koepka is number one in both the world rankings and FedEx Cup but he has work to do to challenge in this one after making it to -5 with 36 holes to go.
Neil Foster is an experienced journalist who specialises in cricket and rugby union. Neil also has a solid knowledge of tennis, golf and football.