NL West Notes: Brazoban, Castillo, Tate, Sanchez

Though the Dodgers' bankruptcy has been the biggest news to emerge from the NL West this week, there's plenty going on with the division's other teams. Here's the latest:

• The D'Backs announced that they called up right-hander Yhency Brazoban and left-hander Alberto Castillo from Triple-A Reno and optioned right-handers Esmerling Vasquez and Bryan Shaw to Reno. 
• Jon Paul Morosi of FOX Sports, who first reported the Brazoban callup, notes that the reliever last pitched in the Major Leagues as a member of the 2008 Dodgers. Meanwhile, Castillo had a 1.83 ERA with 8.0 K/9 and 2.5 BB/9 in 39 1/3 innings at Triple-A this year.
• Padres prospect Donavan Tate received a 50-game suspension for violating MLB's drug prevention and treatment program, according to John Manuel of Baseball America. It's the second time that Tate, the third overall selection in 2009, has tested positive for a drug of abuse. The 20-year-old has a .294/.368/.471 line through 76 plate appearances in the lower minors this year.
• Triple-A manager Steve Decker told Chris Haft and Adam Berry of MLB.com that 21-year-old catching prospect Hector Sanchez probably needs more seasoning before he can contribute in San Francisco. The Giants recently promoted Sanchez from Class A to Triple-A, but would like to see him improve his plate discipline. They're searching for big league catchers in the meantime.