Quick Hits: Commissioner, Rollins, Diamondbacks

Now that Bud Selig has announced he will retire following the 2014 season, speculation has already begun about who will be Major League Baseball's next commissioner.  ESPN's Jayson Stark thinks it would be "a monumental upset" if MLB doesn't go with an internal candidate, and the favorites are league executive vice-presidents Rob Manfred and Tim Brosnan, and MLB Advanced Media CEO Bob Bowman.  Yahoo Sports' Jeff Passan hears that Manfred is the safest and most well-rounded pick, though some sources consider Brosnan to be the better candidate.  Stark and Passan list such names as Tigers GM Dave Dombrowski, Mets GM Sandy Alderson, Indians president Mark Shapiro and Diamondbacks president Derrick Hall as other possible choices.

Here are some notes as Yankee Stadium says goodbye to Mariano Rivera…

• Jimmy Rollins is confident that the Phillies already have the pieces they need to succeed thanks to their emerging youth, CSNPhilly.com's Corey Seidman writes.  “That old window's closed," Rollins admitted. "This is a brand new thing. You've still got the pieces, but this is a brand new thing going forward. Obviously we would love to have that right-handed bat, but Darin Ruf has come up and done that so far. We're going to get Ryan [Howard] back, hopefully a healthy Ryan back on his legs and strong."
• Diamondbacks GM Kevin Towers will recommend to ownership that manager Kirk Gibson be retained for next season, Towers told reporters (including MLB.com's Steve Gilbert).  Gibson has a 289-277 record since taking over as Arizona's manager halfway through the 2010 season and he led the team to an NL West title in 2011.  Both Gibson and Towers are only under contract through the end of the 2014 season.
• While Brad Ziegler has enjoyed being the Diamondbacks' closer, he tells Nick Piecoro of the Arizona Republic that it doesn't matter if he's closing or in his usual set-up role next season.  Ziegler has a 2.28 ERA and 12 saves over 71 IP and a league-best 76 games this season.  He's going into his third and final year of arbitration eligibility though there has been talk that Arizona will try to work out a contract extension.
• Jack Zduriencik's mistakes as the Mariners' general manager are recapped by Geoff Baker of the Seattle Times in a piece that chronicles the team's strategies and major transactions over the last several years.  While Baker holds Zduriencik accountable for his own mistakes, he also points the finger at the club's upper management for the larger issues surrounding the Mariners' lack of recent success.
• John Danks is "embarrassed" by his performance since signing a five-year, $65MM extension with the White Sox before the 2012 season, the southpaw tells MLB.com's Scott Merkin.  "The goal is always to throw 200-plus innings, take the ball every day and give us a chance to win. I've got three years to make everyone believe it was worth it," Danks said.  "That's part of my motivating factor. I want to be the productive player I'm expected to be."
• "The Cubs are the last-place team poised to contend the soonest. The Astros are the one with the brightest future," Jim Callis writes for MLB.com in his analysis of both teams' young talent.

MLBTR's Zach Links contributed to this post