In such an event, Arizona ponders its roster not just for the remainder of this young season, but for next as well: Who will stay and who will go? Who will get that next juicy contract?
Here are the odds that each 25-man roster player (including "regulars" presently on the DL) will stay for 2014—as the Upton and Young sagas demonstrated, anything is possible. This list is arranged from most to least likely to stay.
Paul Goldschmidt: Arizona was eager to re-sign Goldy this offseason, offering him a cheap-o half-million-dollar contract on March 2 before giving in and showering Goldschmidt with a five-year, $32 million deal on March 29. Goldschmidt is the real deal and may become Arizona's first true franchise player at first base.
Miguel Montero: This All-Star catcher is perhaps one of the most underrated assets in the D-Backs' tool belt, though his 2013-2017 $60 million contract indicates the team knows quite intimately about his true value. Though the deal does not include a no-trade clause, it is the largest in franchise history, suggesting Montero is very likely not going anywhere.
Ian Kennedy: After capturing the NL wins lead in 2011—tied with Cy Young award winner Clayton Kershaw—Kennedy has routinely been named the D-Backs' No. 1 starter, a title he likely will carry with him well into the 2014 baseball season.
Wade Miley: How can this young pitcher be anything but No. 1 on the 2014 returnee list? Crazy.
Adam Eaton, A.J. Pollock: Arizona has shuffled its outfield quite drastically specifically for its up-and-comers, namely Eaton and Pollock. If anyone will be around next year, it surely will be Eaton with Pollock close behind.
Aaron Hill: Though Arizona declined a 2012 option on Hill on Halloween 2011, the club quickly scooped Hill out of free agency on November 15 that year with a two-year deal, extending Hill to three in February 2013. Hill is Arizona's second baseman and with Josh Wilson serving as backup, Hill will likely stick around for at least another year.
Daniel Hudson: Young, still waiting on service accrual for arbitration—he's a keeper even with that pesky injury.
J.J. Putz: Signing an extension to stay for the 2013 season, Putz has shown an affinity for closing ballgames that has not faded in recent years. If he remains healthy, that one-year, $7 million 2014 option may be taken at the end of the season.
Trevor Cahill: Acquired from Oakland last year, Cahill is signed through 2015 with options for 2016 and 2017. As Arizona begins to find its starting rotation, Cahill has been placed directly behind Kennedy in the No. 2 slot, suggesting a firm commitment for at least the immediate future.
Martin Prado: Prado's four-year contract to play through 2016 suggests that at long last, Arizona has found its third baseman. He stands to gain $7 million this season and $11 million the next, making him a somewhat economical choice for the hot corner.
Jason Kubel: Playing on a two-year contract with a 2014 option, Kubel has been a welcome surprise in the Arizona outfield, suddenly finding himself a key veteran figure for the likes of Eaton (when healthy) and Pollock.
David Hernandez: Hernandez is signed through 2014 and is a powerful yet young force in the D-Backs bullpen. He is enough of a mainstay to stick around until at least next April.
Brad Ziegler: The bullpen can be a dangerous place to play on a one-year contract, but Ziegler was able to procure a $3.15 million salary heading into 2013. If the price remains right, he might stick around another year if he isn't gobbled up by an MLB foe first.
Josh Collmenter: Another quality pitcher, Collmenter is still young and still developing—plus, as a youngster with just two years of MLB service, he's cheap.
Eric Chavez: Though he and Prado can platoon the hot corner in 2013, at some point one will likely capture the position full-time. The Diamondbacks have already demonstrated their commitment to Prado with a lengthy contract while Chavez is playing on the winds of a one-year deal.
Gerardo Parra: Parra is that fourth outfielder who keeps finding his way into ballgames. This year, it's because of injuries to Eaton and the sudden dumping of the Upton-Young duo, but how long can No. 4 really last?
Patrick Corbin/Matt Reynolds: These pitchers may find themselves back in Triple-A on Opening Day 2014, though if recent injury trends have had anything to do with it, both will be back on the roster come next season.
Wil Nieves: Montero and the Diamondbacks clearly need a backup catcher, and Nieves just happens to be one. At under $1 million, Nieves is a cheap option—this year—though he may also prove a tertiary option during trade season.
Willie Bloomquist: Another victim of the injury bug, Bloomquist makes this list by simply being a member of the "if-healthy" 25-man roster. Sure, Pennington and Hill will fill the middle infield with Wilson as second fiddle, but once Bloomquist returns, he surely will get another shot—if he stays healthy.
Eric Hinske: Purchased to support the young Goldschmidt, Hinske is a necessary backup at first base, but on a one-year contract and with trade season just around the corner, is he also expendable?
Cody Ross: After being dumped by the Red Sox following a disappointing 2012—they did not renew his contract—Arizona picked up Ross on a three-year, $26 million deal, suggesting a somewhat firm commitment to the seven-year MLB vet.
Still, Ross has played for his share of teams—the Tigers, Dodgers, Reds, Marlins, Giants and Red Sox—which does tend to make him a trade bait candidate, especially if the D-Backs' young outfielders find their way in 2013.
Brandon McCarthy: Another pitcher who traveled the Oakland-to-Arizona turnpike, McCarthy is in his infancy with the D-Backs, suggesting he is not off-limits when it comes to trades and transactions. McCarthy is signed through 2014.
Cliff Pennington: Also signed through 2014, Pennington is a low-cost utility player that Arizona sorely needed heading into 2013. Accordingly, until that infield is set in stone, Pennington will continue to be a valuable player for GM Kevin Towers.
Josh Wilson: Wilson is another journeyman of a ballplayer, though with Bloomquist's present injury, his backup services are invaluable. With a healthy infield, however, Wilson will be the first to go.
Alfredo Marte: This is more of a "Eaton and Ross will return from the DL" move than a "will be traded to X, Y or Z" one. Marte will simply fall to Triple-A.
Tony Sipp: Out of the bullpen, Sipp will need to prove his worth to show Towers he is worthy of a 2014 season with Arizona.
Heath Bell: After a slumping season with the Miami Marlins, Bell came to Arizona already riding a three-year, $27 mil deal, with an option for 2015—the Marlins will pay $8 million of the $21 million remaining on Bell's contract. As such, Bell is absolutely expendable if he does not perform well.