Quick Hits: Rivera, Jimenez, Hudson, Pirates

While there has been a great deal of attention paid to Mariano Rivera's farewell tour, he's not the only MLB vet who could call it quits after this season, writes MLB.com's Doug Miller.  The Indians' Jason Giambi and the Rockies' Todd Helton seem likely to call it a career and Yankees hurler Andy Pettitte could retire – again.  Here's tonight's look around the Majors..

• Ben Lindbergh of Baseball Prospectus breaks down the changes in Ubaldo Jimenez's mechanics that have led to a resurgence since his first three starts of the season (subscription required). Two of the Indians' hurler's last three starts have been 10-strikeout, zero-walk outings, and he's posted a 2.82 ERA with 9.3 K/9 and 4.2 BB/9 since April 29 (24 starts). It makes sense for Jimenez to void his option and seek a multi-year deal, in Lindbergh's mind, though he carries significant risk as his mechanics are still flawed.
• The Diamondbacks face an interesting situation with Daniel Hudson this offseason, writes Nick Piecoro of the Arizona Republic. Hudson, who underwent his second Tommy John surgery this year and hasn't pitched since early 2012, is eligible for arbitration for the first time this offseason. Hudson says he "would be open to taking about pretty much anything (contract-wise) if it meant staying [in Arizona]." Hudson feels that he may have to come back as a reliever and is open to that role.
• The Pirates' 2007 hires of club president Frank Coonelly and General Manager Neal Huntington are paying off in a big way, writes MLB.com's Tom Singer.  

Steve Adams contributed to this post.