"To me, that position more than anything I think it's probably defense No. 1," Towers said. "Defense is a big part of our game, so if I had to add weight to it, it's probably the better defender, who do we think is going to be the better defender. Just making the consistent, the routine plays, that's what we want to see."
• Through their first four games, D-backs starters had allowed six earned runs in 18 innings for a 3.00 ERA.
"All the starters that I've seen have thrown the ball well," Towers said. "That's the part I'm probably most pleased with."
• Gibson reiterated Saturday that he is considering splitting up Paul Goldschmidt and Mark Trumbo in the lineup.
Goldschmidt will all but certainly hit third, and Gibson might choose to slide Trumbo to fifth or sixth so that there would be runners on base for Trumbo.
"One of the thoughts is to split them up a little bit, because you would think Goldy would clean a lot of the runs up, so you want to have multiple opportunities," Gibson said.
Steve Gilbert is a reporter for MLB.com. Read his blog, Inside the D-backs, and follow him on Twitter @SteveGilbertMLB. Chris Gabel is a contributor to MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.