Don’t expect the Diamondbacks to make a splashy trade in response to Stephen Drew’s fractured right ankle, sustained in Wednesday’s game against Milwaukee.

For one thing, the trade market is thin on impact shortstops. Baltimore’s J.J. Hardy is off the market after signing an extension, and now it appears likely that the Mets will keep Jose Reyes past the July 31 non-waiver trade deadline.

The Diamondbacks have a credible internal solution in veteran utility man Willie Bloomquist.

Even before Drew’s injury, Diamondbacks general manager Kevin Towers was focused on midrange upgrades, such as relievers Todd Coffey, Jason Isringhausen and Jason Frasor. It’s unlikely that Towers will become more willing to part with key prospects given the team’s relatively small likelihood of overtaking the defending champion Giants in the National League West.

When play began Wednesday, the Diamondbacks trailed the Giants by 4 1/2 games — and had a 5 percent chance of reaching the postseason, according to the Baseball Prospectus postseason odds calculator.

— Jon Paul Morosi