You may not be able to directly win fantasy football games during the offseason, but you can certainly get a leg up in the quest to win a championship during these lean summer months.

With NFL training camp is on the horizon, sharp fantasy managers should start making mental notes on positional battles to watch, rookies to follow and storylines to monitor that will have a tangible impact on how the upcoming fantasy season shakes out.

These roster decisions and depth chart changes that occur during camp will have a noticeable impact on where many players get drafted—if they do at all—as well as their chances of becoming meaningful contributors in 2024.

With that in mind, here are six deep sleepers to keep an eye on when NFL training camps kick off next month.

Fantasy points, ADP, rankings and other data courtesy of FantasyPros using PPR metrics.

QB Gardner Minshew II, Las Vegas Raiders

Gardner Minshew II may not be a name-brand quarterback, but he'll get the job done for fantasy managers who want to avoid spending a valuable pick on the backup position during their league's draft.

The Las Vegas Raiders signal-caller currently has an ADP of 232, meaning he's likely to be a final-round pick or a waive-wire pickup. Despite that, Minshew has the upside to deliver a career-best campaign that can help shrewd managers win a championship by serving as a high-quality backup and spot starter.

The 28-year-old finished as fantasy's QB21 last year despite not becoming a consistent starter until Week 6. From that point forward, he finished as a top-20 quarterback six times and even had a pair of top-six finishes despite leading a limited Indianapolis Colts passing offense that ranked in the bottom 10 leaguewide.

Minshew now finds himself in a much better position in Las Vegas. He has a litany of weapons at his disposal, including generational receiver in Davante Adams and tight end Brock Bowers, whom the Raiders selected at No. 13 overall this year. The supporting cast also includes Jakobi Meyers, Tre Tucker, Michael Gallup and Michael Mayer.

With inexperienced running back Zamir White expected to take over the backfield following the departure of Josh Jacobs, the Raiders could air it out even more than the 59.1 percent of offensive plays they threw on last year.

Managers in standard 10- or 12-team leagues may not want to trust Minshew as their starter, but his floor should make him a high-end backup. Considering he has the upside to become a top-16 fantasy QB, don't be afraid to draft Minshew before he even earns him the QB1 role over incumbent Aidan O'Connell during training camp.

RB Kendre Miller, New Orleans Saints

The New Orleans Saints' ground game wasn't anything special last year, but it should improve in 2024 with the rise of Kendre Miller.

Miller spent most of his rookie campaign on the sidelines due to hamstring and ankle injuries. He finished as the RB70 with only 41 carries for 156 yards and one touchdown along with 117 yards on 10 receptions, although he did show flashes of promise in his 112 offensive snaps. His best outing came in Week 5, when he finished as the RB16 after tallying 90 total yards on 16 touches.

If he can stay healthy, Miller should get more opportunities this coming season. Longtime starter Alvin Kamara is seemingly on the decline and is coming off a relatively disappointing campaign. Kamara saw the lowest snap share (63 percent) of his career outside of his rookie campaign and may cede more playing time to Miller as he continues to age.

Miller will also have to contend with Jamaal Williams for touches, but it wouldn't be a surprise to see the veteran take on a tertiary role in this backfield after his underwhelming 2023 performance.

Williams averaged less than three yards per carry in his debut Saints season and scored only one rushing touchdown after leading the league in that category the prior year. Miller can easily usurp Williams on the depth chart and solidify his status as the team's RB2 with a strong training camp.

Although Miller could log plenty of backfield touches for New Orleans, his ADP is only 132. While he'll still need to stay healthy and withstand the rigors of an NFL season, Miller's ceiling is worth rolling the dice on. Getting an RB2 anywhere near that draft position would be a massive steal for managers looking to maximize the value of their late-round picks.

RB Kimani Vidal, Los Angeles Chargers

After parting ways with Austin Ekeler this offseason, the Los Angeles Chargers brought in a pair of veteran replacements in J.K. Dobbins and Gus Edwards and drafted Kimani Vidal. While the two former Baltimore Ravens backs offer plenty of experience, the rookie could be the most talented of the bunch and has the potential to climb ahead of both on the depth chart.

Dobbins has plenty of talent, but he hasn't been able to stay healthy since being drafted in 2020. He's played only 24 of a possible 67 games, as he missed the entire 2021 campaign because of a torn ACL and suffered a torn Achilles in the season opener last year.

Edwards has helped pick up the slack in Dobbins' absence before, but he's a one-dimensional back who doesn't offer much outside of securing tough yardage on the ground. He should have a place in the Chargers' rotation, but Edwards could remain a backup even if Dobbins goes down for a lengthy stint.

Meanwhile, Vidal was a steal for the Bolts at No. 181 overall after dominating at Troy. He used a blend of vision, elusiveness and burst to leave defenders in his wake, amassing over 4,000 yards and 33 touchdowns on his 781 carries.

The 22-year-old profiles as an ideal fit in the Chargers' new-look offense under head coach Jim Harbaugh, especially if he can pad out his pass-catching skills. Availability is an asset L.A. may need most from a running back if Dobbins goes down again, so it helps that Vidal stands a well-built 5'8" and 215 pounds, played 48 games in college and should be able to hold up fine at the next level.

It may take an injury to Dobbins or Edwards for Vidal to get enough touches to become fantasy relevant, but he's still worth the gamble at his ADP of 149, especially if he shines in training camp. Taking a late-round flier on a back with this much upside could pay dividends.

WR Javon Baker, New England Patriots

Second-round rookie Ja'Lynn Polk may be the most notable addition to the New England Patriots' new-look receiving corps, but fellow fourth-round rookie Javon Baker could go down as a better value pickup for fantasy managers.

At 6'1" and 202 pounds, Baker has the solid size to combat the big cornerbacks he'll face in the NFL. He utilized that frame in combination with elite leaping ability—he showcased a 37-inch vertical at the combine—to emerge as a consistent playmaker for the Knights.

Last year alone, Baker hauled in 15 of the 30 passes sent his way that traveled at least 15 yards in the air, per Doug Farrar of Touchdown Wire. Baker tallied 574 yards and four touchdowns on those big plays and should create plenty more in the NFL.

With a knack for creating separation—something the Patriots have sorely lacked in recent years—and plenty of room to develop his game further, Baker could end up not only earning a spot in the team's pecking order, but becoming one of rookie quarterback Drake Maye's favorite targets.

Baker will need to beat out Polk in addition to incumbents like Demario Douglas, JuJu Smith-Schuster and Kendrick Bourne and veteran pickups such as K.J. Osborn for that distinction. But the 22-year-old clearly has the talent to quickly break out and shine for a Patriots offense that sorely needs big-play ability.

Although Baker only has an ADP of 193 right now, he could rise fast on the heels of a flashy training camp that secures him a place near the top of New England's depth chart.

Managers with drafts in the near future shouldn't shy away from taking Baker in the Round 15 range, especially since those in leagues drafting closer to the start of the season may have to spend a much higher pick on him.

WR Greg Dortch, Arizona Cardinals

Greg Dortch hasn't made a huge impact for the Arizona Cardinals over the last three years, but he might be a late-bloomer who's on the cusp of a breakout season.

Dortch bounced around the league after going undrafted in 2019 before finally catching on with the Cardinals in 2021. He made a blip on the fantasy radar the following year when he caught 52 passes for 467 yards and two touchdowns, but he crashed back to earth last season, finishing as the WR93.

Despite that, the 26-year-old could be poised for a career year in 2024. Not only should he have a healthy Kyler Murray under center again, but the Cardinals also have a major target void to fill after losing Marquise Brown and Rondale Moore this offseason.

The Cardinals did select a potential superstar in Marvin Harrison Jr. with the No. 4 overall pick in this year's NFL draft, and he figures to become their WR1 right away. He should command defensive attention on the outside and open things up for Dortch to take advantage from his natural slot position.

Considering his potential to amass a huge volume of targets and catches, Dortch looks poised to greatly outperform his ADP of 212.

If he parlays a good training camp performance into a place on the depth chart ahead of free-agent pickup Zay Jones or Michael Wilson—or one of those players goes down with an injury—Dortch could become a consistent fantasy contributor in 2024.

TE Ja'Tavion Sanders, Carolina Panthers

Ja'Tavion Sanders could follow Sam LaPorta to become the next great NFL tight end to have a stellar rookie campaign. While the Carolina Panthers didn't draft until the start of Day 3, the Texas product finds himself in an ideal spot to showcase his talents immediately.

Sanders is coming off a strong pair of seasons at Texas, having racked up 1,295 yards and seven touchdowns on 99 catches in that span. He still has room to add muscle and power onto his 6'4", 252-pound frame and needs to become a more consistent run-blocker, but he should contribute from the jump as a versatile pass-catching weapon who can outrun linebackers and utilize his larger frame to beat cornerbacks.

Carolina's offense was atrocious last year, in part because it had one of the weakest tight end rooms in the NFL. Hayden Hurst tallied only 18 catches for 184 yards and one score in the nine games he played, while 2021 third-round pick Tommy Tremble failed to capitalize on an opportunity to take over.

With Tremble mustering only 194 yards and three touchdowns on 23 receptions last year, it wouldn't be a surprise to see him take a back seat to Sanders if the rookie shows out in training camp.

Carolina needs all the help it can get after No. 1 overall pick Bryce Young oversaw a unit that ranked dead last in both total and passing offense and tied for the fewest points scored last year. With Tremble clearly not the answer, Sanders could usurp the starting role and work as a much-needed safety blanket for the young signal-caller as he seeks to turn his career around.

Managers could do far worse than taking a flier on Sanders given his ADP of 215. He's one of the few tight ends in that range (if not the only one) who has the upside to become a weekly fantasy starter.