The Warriors appear to be doing their due diligence in their potential search for an upgrade at one position of need. It’s unclear which position(s) Golden State will look to upgrade before the NBA’s Feb. 5 trade deadline, but with just over four weeks remaining, one position the Warriors have been connected to repeatedly is center. Specifically, Mavericks big man Anthony Davis, who Dallas reportedly called Golden State about, and who the Warriors haven’t completely closed the door on pursuing. ESPN’s Anthony Slater reported in one of the outlet’s recent joint columns with other insiders, citing sources, that Golden State has “sniffed around” the center trade market as it continues to get inconsistent play from new veteran big man Al Horford this season.“Biggest need: Al Horford, the Warriors’ biggest offseason addition, has generated a tiny bit of rhythm after two months marked by injury and ineffectiveness,” Slater wrote. “If the surge continues, they could feel less inclined to enter the center market, but league sources said they have sniffed around.”It’s unclear what other centers the...