Buchholz has not pitched in six weeks and seemed close to returning before the Red Sox decided to send him to another specialist. The results of that visit were not encouraging and now Buchholz will be shut down.
It's a big blow for the Red Sox, who were already having trouble finding five live arms. Buchholz had a 3.48 ERA in 14 starts this season and seemed to be penciled in as the No. 3 starter in a playoff series.
However, with Buchholz out the Red Sox must explore alternatives. We know Jon Lester and Josh Beckett will be at the front of the rotation, but who's behind them?
Here's a look at all the potential candidates to fill the void left by Buchholz.