You tinker with your fantasy squad's starting lineup, looking to have the best possible player at every position.
But did you know that your bench could make the difference between ultimate fantasy success or defeat? For those who have the reserve space, stashing premium prospects or injured big leaguers -- guys who can make a difference tomorrow, if not today -- makes a ton of sense. Without further ado, let's review 10 players worth hoarding for the time being.

Cesar Hernandez, second baseman, Phillies
Prior to landing on the disabled list with a left oblique strain, Hernandez was helping owners in many mixed formats by producing a .277 average and 40 runs scored across 238 at-bats. Likely to return to the top of the Phillies' lineup in July, the speedy sparkplug can be stashed by those who expect to need a runs scored and steals boost down the stretch.
Consider in: 12-team mixed leagues
Yoan Moncada, third baseman, White Sox
Arguably the best stash option at any position, Moncada could step into the starting second base job in Chicago by the All-Star break. The 22-year-old has the tools to help fantasy owners right away, having hit .285 with eight homers and 13 steals across 270 plate appearances with Triple-A Charlotte. And although frequent whiffs could limit his batting average contributions, Moncada may rank among the second-half leaders in swipes.
Consider in: 10-team mixed leagues

Amed Rosario, shortstop, Mets
The Mets' top prospect, Rosario is hitting .325 with 48 RBIs and 12 steals across 310 plate appearances with Triple-A Las Vegas this season. The 21-year-old natural shortstop could soon find a home atop New York's lineup while also grabbing a permanent spot in an injury-depleted Mets infield. Among all current Minor Leaguers, Rosario ranks behind only Moncada in terms of potential to make a sizable impact during the second half.
Consider in: 10-team mixed leagues
Yasmany Tomas, outfielder, D-backs
Coming off a 31-homer, 83-RBI season, Tomas was off to a bit of a slow start when he hit .241 with just eight long balls across his initial 166 at-bats before landing on the disabled list with a groin injury. Once he rejoins a D-backs lineup that ranks fifth in baseball with 378 runs scored, Tomas could be a useful second-half power source for those who recognize that his 2017 fly-ball and hard-hit rates are nearly identical to those he produced a year ago.
Consider in: 10-team mixed leagues

Jayson Werth, outfielder, Nationals
Prior to landing on the disabled list on June 5, Werth had become a useful option in deep formats by reaching base often and flashing some power skills as the regular No. 2 hitter in a productive Nationals lineup. Wise owners will stash him away with the hope that he will return to the active roster prior to the All-Star break.
Consider in: 15-team mixed leagues
Jon Gray, starter, Rockies
Many owners entered their 2017 drafts eyeing Gray as a potential breakout option, hoping he could use his stellar stuff to overcome Colorado's hitter-friendly park and help mixed-league teams. For those who are willing to accept the risks associated with using a pitcher at Coors Field, stashing Gray could lead to a lofty strikeout total when he returns from a left foot stress fracture later this month. The right-hander owns a lifetime 9.5 K/9 rate and 3.66 FIP, so he carries significant upside.
Consider in: 12-team mixed leagues
Carlos Rodon, starter, White Sox
Once one of the top prospects in baseball, Rodon took a step forward when he posted a 3.11 ERA and a 1.19 WHIP across his final 11 starts of 2016. The left-hander was a popular sleeper in 2017 drafts due to his stellar strikeout skills and strong finish to last season, but he has spent the entirety of the current campaign on the disabled list with biceps bursitis. Currently participating in a rehab assignment, Rodon could return to the White Sox rotation by the end of this month.
Consider in: 12-team mixed leagues
Luke Weaver, starter, Cardinals
Weaver is in the midst of a stellar Minor League season, posting a 2.33 ERA, a 0.99 WHIP and a 9.9 K/9 rate across nine starts with Triple-A Memphis. And with a lifetime 1.88 ERA and a 1.06 WHIP in the Minors, the right-hander has the skills to pay major dividends for owners who look past his brief big league struggles (5.70 ERA, 1.60 WHIP) last year. Cardinals management may soon decide that adding Weaver to their rotation is the perfect way to jumpstart a veteran club that is struggling to stay in the postseason chase.
Consider in: 15-team mixed leagues
Nate Karns, SP/RP, Royals
Karns has been surprisingly stellar as a starter this season, posting a 3.43 ERA, a 1.12 WHIP and a 9.9 K/9 rate across eight rotation opportunities. Owners who need a pitching boost should be pleased to stash the right-hander, who has returned to throwing and should return prior to the Midseason Classic.
Consider in: 12-team mixed leagues

Trevor Cahill, SP/RP, Padres
Cahill quickly earned a spot in shallow-league rotations this season by producing a 3.27 ERA and an 11.1 K/9 rate across seven starts before landing on the disabled list with a right shoulder strain on May 17. And with the right-hander set to soon start a rehab assignment, he could resume his successful season at some point prior to the All-Star break. For owners who are looking to make up ground in the strikeouts category, stashing Cahill right now could result in a major boost during the second half.
Consider in: 12-team mixed leagues