More than likely, the Arizona Diamondbacks’ recent hot streak has removed any directional uncertainty from their trade deadline approach. A game out of a wild-card spot, the Diamondbacks, who have gone 7-2-1 in their past 10 series, look like buyers. Maybe not super-aggressive, all-in buyers, but certainly a club that will look to add.

Of course, that could still change — there are still 10 games left to be played ahead of the July 30 deadline — but it feels like GM Mike Hazen’s course is more or less settled.

What seems less clear, however, is whether he will need to add starting pitching. That question might be one Hazen considers up until the final day, while gathering information both on the field and behind the scenes.

The Diamondbacks’ rotation was expected to be not just a strength of the club but among the best in baseball. Instead it has been among the worst in the majors. After it was hit hard by injuries, the club’s stable of young pitchers have largely struggled to compensate.

At the moment, the Diamondbacks seem to be in a bit of uncertain spot. They have three starters working their way back from injury in left-handers Jordan Montgomery and Eduardo Rodriguez and right-hander Merrill Kelly.

Montgomery is probably going to return next week in Kansas City. Rodriguez and Kelly, however, probably won’t be back until after the deadline, meaning the Diamondbacks won’t know for certain if they will be their usual, healthy selves until it is too late to make further changes.

That will make days like Wednesday — when both Rodriguez and Kelly were expected to throw bullpen sessions — potentially important opportunities to evaluate. Those two figure to throw at least a couple of more times leading up to the deadline.

The trade market also figures to complicate things. At the moment, there do not appear to be many sellers, what with the National League wild-card race muddled up by a logjam of teams separated by only three or four games. As such, the number of quality starting pitchers available is likely to be limited.

Detroit Tigers right-hander Jack Flaherty is having a dominant season, but he also is dealing with back problems, making him a risky acquisition. Chicago White Sox lefty Garrett Crochet has been incredible, but he has thrown nearly twice as many innings as his previous career high, raising questions about his ability to maintain his effectiveness down the stretch.

Beyond those two, there do not appear to be many starters available who move the needle from a results perspective, though there could be several innings-eating types on the market.

But with the recent results of right-handers Ryne Nelson and Yilber Diaz, it seems debatable as to whether the Diamondbacks need someone to merely log innings. Nelson has pitched to a 3.92 ERA over his past 10 outings (eight starts); Diaz, a rookie, has given up one run in six innings in each of his two starts. Once the three injured starters return, the Diamondbacks will likely feel pretty good about the depth Nelson and Diaz would provide.

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For now, it seems the Diamondbacks’ most obvious need is in the bullpen. They could use another left-hander to pair with Joe Mantiply, or just another late-inning option to ease the burden on a group of relievers that has been worked hard through the first 3 1/2 months.

As such, one name mentioned above does make some sense: Crochet. The Diamondbacks could target him as a bullpen piece for the second half with the intention of moving him back into the rotation next season.

The Diamondbacks could also consider another position player, likely on the infield as a sort of insurance policy in the event Eugenio Suarez’s turnaround doesn’t last. But fitting that player onto the roster could be tricky, plus it doesn’t feel like as glaring a need as the bullpen.

Again, with nearly two weeks to go before the deadline, much can change. The Diamondbacks could go ice cold. They could suffer injuries. They could develop concerns based on how their rehabbing pitchers are looking.

But for now the rotation does not appear to be a major need. Of course, they could add anyway, needing only to remember what happened last season.

A year ago, the Diamondbacks did not add at the deadline and wound up throwing bullpen games in both the league championship series and the World Series.

Still, the question they will confront this month is likely to be the same as at last year’s deadline — one of cost vs. need. Hazen said the price to acquire a rental starter last year was center fielder Alek Thomas. He declined.

With so little pitching available and so many contenders in the playoff race — many of them in more desperate need of pitching — it feels like the same scenario might play itself out again.

This article originally appeared on Arizona Republic: Diamondbacks’ rotation in tricky spot as MLB trade deadline approaches