Field Staff Notes: Nationals, D-Backs, Ausmus, Mariners, Rangers

New Nationals manager Matt Williams says that the club has "some things we can refine" but is not in need of fixing, he said upon his introduction today. Mark Zuckerman of CSNWashington has a fine breakdown of the proceedings, including Williams' stated emphasis on improving the club's defense and increasing its aggressiveness on the basepaths.

• Washington will maintain its existing coaching staff under Williams, with two exceptions, Zuckerman further notes. Bullpen coach Jim Lett will be replaced with Matt LeCroy, and Mark Weidemeier — who, like Williams, comes via the Dbacks — will be added to the staff as a defensive guru of sorts. 
• Meanwhile, the Diamondbacks have announced their staff, according to a team press release. Replacing Williams as the third base coach is Glenn Sherlock. The club also promoted Turner Ward to Hitting Coach and added first base coach Dave McKay, who had most recently served in that capacity for the Cubs.
• Even as they watched the experienced McKay leave town, the Cubs welcomed Brad Ausmus to Chicago today to interview for their managerial opening, tweets Bruce Levine. The longtime big league catcher has received plenty of attention this offseason, and now joins a list of six candidates to have had their moment to impress the Cubs' brass, as CBSSports.com's Jon Heyman explains.
• The Mariners are also interested in Ausmus's services, according to a report from Shannon Drayer of ESPN Radio Seattle. Drayer indicates that Ausmus has had an interview already. 
• Former Mariner Joey Cora is also a possibility to take the helm in Seattle, says Drayer. He has already given one interview and could be in town right now for a second.
• As the club works to fill its skipper role, it has already quietly jettisoned bench coach Robby Thompson and third base coach Jeff Datz, reports Geoff Baker of the Seattle Times. The former was shown the door last week, while the latter was told he could stay on as a scout but wouldn't keep his uniform for next season. The remainder of the 2013 staff is still in limbo.
• The Rangers have brought back Bobby Jones to serve in a coaching capacity that remains to be decided, tweets Anthony Andro of FOX Sports Southwest. Jones has bounced between the bigs and various minor league managing roles in the Texas organization.