Injuries. Good teams can weather the storm and for the most part, the Cubs have. However, you can't lose Soriano, Johnson, Z, and Theriot, all of whom are major parts of the team and expect to keep rolling. The Cubs have built a decent cushion and because of that, they'll be sitting in first place once we get the key people back. This is not an excuse for the recent slide, but when you lose key people it will catch up to you and it has. No worries. Get healthy, get a starter and get ready for October.