Diamondbacks in the market for catcher, starting pitchers

The Arizona Diamondbacks are poised to make at least one trade in the five weeks before spring training begins.

The reason: They have a clear surplus at one position (outfield bats) and obvious needs at two others (starting rotation and catcher).

The Diamondbacks’ 40-man roster includes only one catcher with major-league experience, Tuffy Gosewisch, and he profiles as a backup. For now, sources say Diamondbacks officials would rather trade for a young catcher than sign a veteran free agent such as Gerald Laird.

The Diamondbacks are considering Chicago Cubs catcher Welington Castillo, as first reported by Nick Piecoro of the Arizona Republic. Houston’s Carlos Corporan also is available via trade, although it’s not clear whether the Diamondbacks and Astros have had serious talks.

Meanwhile, the Orioles are looking for a left-handed-hitting outfielder and have inquired with the Diamondbacks about David Peralta and Ender Inciarte, sources say. The Diamondbacks can afford to trade one of them because they also have outfielders A.J. Pollock, Mark Trumbo, Cody Ross and potentially Yasmany Tomas, if his effort to play third base is unsuccessful

Arizona also is open to adding another starting pitcher. Only two pitchers on the Diamondbacks’ 40-man roster — Josh Collmenter and Vidal Nuno — threw more than 120 innings in the major leagues last year.