"There's no minimum or maximum, just that it's a 10-day stay and then we'll figure it out", Cubs manager Joe Maddon told reporters Friday of Lester's return.
Lester made some history before he exited.
Reliever Justin Grimm also heads to the DL with a right index finger infection, and the Cubs will recall pitchers Felix Peña and Rob Zastryzny from Triple-A Iowa. He's averaging fewer than six innings per start for the first time since 2007. In 1.2 innings he allowed seven hits, nine runs (seven earned), one walk and one home run against a poor Reds team. He'd allowed nine total over 102 innings split between 2014-15.
Boyo Transportation school buses pass re-inspection
But once drivers are on Veterans Parkway, which has a grass median, they must stop only for a bus going in their direction. Law enforcement takes school bus stop arm and school patrol crossing guard flag violations very seriously.
Even with Lester's rough outing, the starting staff has a 3.28 second-half ERA which is fourth in baseball and they're averaging almost a half inning more a start compared to the first half.
However, after visiting with a specialist, there's good news for Lester and the Cubs.
The Cubs are now clinging to a slim lead in the NL Central, with the Brewers one game back and the Cardinals 1 1/2 games off the pace. After all, Lester leads the Cubs in innings pitched and has the best FIP among starters. If not, the Cubs' Central chances will dwindle.