Minor Moves: Irwin, Chang, Teahen, Jacobs

Today's minor moves…

• The Pirates placed right-hander Phil Irwin on the 60-day disabled list, the club announced.  Irwin made his Major League debut this season, allowing four earned runs over 4 2/3 innings in a start on April 14.  Irwin, a 21st-round draft pick in 2009, has a 2.97 ERA and 5.03 K/BB rate over 423 2/3 minor league innings.
• The Indians signed Taiwanese shortstop Yu-Cheng Chang for $500K, reports Ben Badler of Baseball America.  The Tribe has been one of the more active teams in Taiwan in recent years, notes Badler.  Chang doesn't have a plus tool currently, hears Badler, and projects as a doubles hitter who may have to move off shortstop.
• The Diamondbacks outrighted righty Eric Smith off the 40-man roster, tweets Nick Piecoro of the Arizona Republic.  The 24-year-old former second-round draft pick has a 7.29 ERA in 21 Double-A innings.
• The Royals opened a 40-man roster spot for Salvador Perez, who returned from bereavement, by transferring lefty Danny Duffy to the 60-day DL, tweets Bob Dutton of the Kansas City Star.
• Mark Teahen was released from the Rangers' Triple-A club yesterday, according to the Pacific Coast League transactions page.  He'd been signed to a minor league deal on May 23rd, after asking for and being granted his release from the D'Backs a few days prior.  Teahen, 31, has a .198/.293/.226 line in Triple-A this year across 123 plate appearances.  He was a key figure in the June 2004 trade that sent Carlos Beltran to the Astros from the Royals.
• Speaking of the D'Backs' Triple-A affiliate, the Reno Aces signed first baseman Mike Jacobs, according to that same transactions page.  Jacobs, 32, last appeared in the Majors with Arizona briefly last year.  He signed a minor league deal with the Mariners in January but was released in March and subsequently played in the Mexican League this year.  Jacobs, a 38th round draft pick of the Mets in 1999, joined the Marlins in the November 2005 Carlos Delgado trade.  In October 2008, the Royals acquired Jacobs from the Marlins for reliever Leo Nunez, who is now known as Juan Carlos Oviedo.
• Six players currently reside in DFA limbo: Mark Lowe of the Angels, Tyler Greene of the White Sox, Vinnie Catricala of the Mariners, Tyler Robertson of the Twins, and Zach Duke and Henry Rodriguez of the Nationals.