How high can Kohlschreiber's ranking go?
He's 13th in the race.
Often not done so well in the 2nd half of the season, because his forehand in particular isn't so well suited to quicker hard courts. With the way he's serving this year (not just Wimbledon) it might change all that, in which case top15 looks very possible.
He defends from last year: R1 Canada, R3 Cincy, R1 US Open, R2 Metz, R2 Beijing, missed Shanghai masters entirely, QF Moscow, R2 St Pete's, R2 Bercy.
Hell of a lot of points to pick up there, especially Metz is a good surface for him.