The D-backs had a laundry list of tasks to complete as their needs far outweighed their resources following the season. But one by one, Towers addressed every need in taking care of shortstop, bullpen depth, a left-handed reliever and trading away Chris Young.
Young, part of a crowded outfield, was traded away in the deal that brought infielder Cliff Pennington from the Oakland Athletics.
"If we had to start the season now, we'd be in pretty good shape," said Towers.
All that's left is to add another pitcher, although it's not an urgent need, and to shore up the left side of the infield. As it stands now, Chris Johnson would start at third, and Pennington, Willie Bloomquist and John McDonald would cover shortstop in a committee approach.
Unless Arizona can acquire Japanese shortstop Hiroyuki Nakajima, any additions to the infield are likely to come via trade, according to Towers.
"I'm always looking at short and third, but if we start the season where we're at, I'm comfortable with that," he said.