The San Diego bullpen in its current state (Street on the DL) was profiled just a few days ago, but there is another member of the pen that could surprisingly play a prominent role. Manager Bud Black indicated over the weekend that any of Andrew Cashner, Luke Gregerson, or Dale Thayer could be used to close out games. On May 6, Gregerson pitched the seventh inning of a tie game, and Cashner the eighth, meaning neither were going to be called upon to get the save. The next day, when a save situation presented itself, Thayer got the call, and preserved the victory with a perfect inning.

Jason Werth's broken wrist could mean a broken season. Plus Jansen is the new closer in LA, Frieri is suddenly in the LAA saves mix, and more ...

After being almost no-hit for the second time in a week, one had to figure that the Minnesota Twins would make some changes. And change they will, bringing in a new shortstop. But not all are of their choosing, as DH Justin Morneau is headed to the DL. Meanwhile, SP Liam Hendricks is reportedly heading to the minors to work out his early season struggles. Who will fill the voids, and how might they fare?

Injury week in review: The Brewers lose Mat Gamel; several key pitching injuries—and two highly-anticipated activations are expected this week.

This NL Midweek Series Matchup column previews eight three-game series this week. All but two teams will be off on Thursday, 5/10.

This AL Midweek Series Matchup column previews two four-game series, four three-game series, and a two-game set.

Huston Street (RHP ,SD) was forced to leave Friday's extra-inning loss to the Marlins after two-thirds of an inning with what would later be diagnosed as a right lat injury. It was originally feared to be a shoulder issue given Street's mannerisms before exiting, but it looks as if he's averted any sort of long-term issue, although a DL stint is still possible.

With Carlos Marmol (RHP, CHC) and Hector Santiago (LHP, CHW) banished from their erstwhile closer roles, Rafael Dolis (RHP, CHC) and Chris Sale (LHP, CHW) are now in line for saves. Each new Chicago closer, however, could split saves with other relievers. James Russell (LHP, CHC) has been named as a potential situational substitute for Dolis, while reports of elbow tenderness could limit Sale's availability.

The big name injuries continue this week as the Yankees' Mariano Rivera suffers a serious knee injury and the Giants lose Pablo Sandoval to another hand injury.

Pablo Sandoval (3B, SF) exited Wednesday's game with an injured hand after a sixth-inning AB; tests on Thursday revealed a broken left hamate bone and the Giants placed him on the 15-day DL. In case this sounds familiar, Sandoval broke the hamate bone in his right hand in 2011. He missed 41 games last season, which makes the 4-to-6 week timetable for his return seem optimistic at best.

This NL Weekend Series Matchups column previews eight three-game series, all of which begin on Friday and end on Sunday.