Just a couple of weeks ago, it would have been a good thing to be compared to Adam Duvall. He headed into the All-Star break as one of this season's most surprising hitters, tied for second in the National League with 23 home runs. As recently as last week, Duvall was being started in 89 percent of CBSSports.com leagues. A 6 for 31 start to the second half without a homer has owners looking for alternatives, as Duvall's activation rate is already down to 80 percent.

Now a comparison with Duvall could be shorthand for "streaky hitter due for major regression."

Duvall is reminiscent of a previous Reds outfielder with a similar name. Adam Dunn would, in turns, electrify and frustrate owners with immense power and lengthy cold streaks. Both hitters fit the "all-or-nothing" mold, posting high strikeout and flyball rates combined with extreme pull tendencies. It's an approach that forces Fantasy owners to deal with a dilemma. Do you enjoy the 35-plus home run potential or shun a batting average that could land below .230?

It's a conundrum that owners are having to face in deciding whether or not to pick up Ryan Schimpf or Robinson Chirinos -- a couple of all-or-nothing hitters who are putting on legitimate power displays. Even among more established players, this approach is not unique, and Duvall's current reality is likely to be the future for several other popular Fantasy hitters.

So let's unveil the roster for the All-Adam Duvall Team. I have chosen the hitter at each position (excluding pitcher) who profiles most like Duvall in his flyball, pull and strikeout tendencies. Some members of this squad already bear a stat line similar to Duvall's, while others have generated different results. Does this necessarily mean they are next in line for regression? A closer look will give us a better idea.

To qualify for the team, hitters have had to amass at least 300 plate appearances and record a ground ball rate of no more than 37 percent, a pulled flyball rate of at least 50 percent and a strikeout rate of at least 18 percent.

Catcher: Salvador Perez, Royals

Salvador Perez
KC • C • #13
2016 STATS, per StatCorner
GB Rate32.1%
Pulled Flyball Rate51.6%
K Rate24.6%
View Profile

Perez had been trending towards a Duvall-like approach the last two seasons with higher flyball rates than he had earlier in his career. The transition is now complete, as the one-time contact hitter has seen his strikeout rate skyrocket. A career-low ground ball rate has helped Perez to smash 15 home runs in his first 88 games.

A flyball-heavy approach sank Perez's batting average to .260 in both 2014 and 2015, yet even with more frequent strikeouts, his average has rebounded to .274 this season. Perez is enjoying his highest BABIP since his rookie season, and it's buoyed by a .288 batting average on grounders. There is nothing about Perez that suggests he can be an above-average hitter on ground balls. If Perez doesn't wear down, he could finish with 25 homers, but the odds seem to be against him hitting even .250 over the remainder of the season.

Incidentally, the catching honors could have just as easily gone to Brian McCann, but voter fatigue accounted for Perez's selection. McCann has been consistently profiling as an all-or-nothing hitter for five seasons now.

First Base: Edwin Encarnacion, Blue Jays

Edwin Encarnacion
CHW • DH • #23
2016 STATS, per StatCorner
GB Rate36.3%
Pulled Flyball Rate51.2%
K Rate20.8%
View Profile

Encarnacion has been a pull-heavy flyball hitter for a decade now, but it's been several years since it has affected his value. Encarnacion's top-shelf power has allowed him to be an elite first baseman, and a good strikeout rate has helped to keep his batting average from being a liability.

This season, Encarnacion's strikeout rate has spiked, but you wouldn't know it from his .262/..354/..544 slash line. He hits enough balls out of play -- and out of the park -- to sustain his batting average, but he will have a hard time maintaining his current 140 RBI pace, even with help from a potent Blue Jays lineup.

Second Base: Brian Dozier, Twins

Brian Dozier
2016 STATS, per StatCorner
GB Rate34.2%
Pulled Flyball Rate70.3%
K Rate18.3%

Dozier has defined the all-or-nothing approach in recent years, and he currently leads majors in pulled flyball rate by a margin of 8.9 percentage points. After a slow start to the season, Dozier has rebounded to the extent that his season-to-date numbers are right in line with his typical showings.

Even though Dozier doesn't strike out at an excessive rate, he has never finished with a batting average as high as .250. There is no reason to think he will do so this season, as his pull tendencies are so extreme, they neutralize the potential impact of a decent strikeout rate.

Third Base: Evan Longoria, Rays

Evan Longoria
ARI • 3B • #3
2016 STATS, per StatCorner
GB Rate32.6%
Pulled Flyball Rate50.0%
K Rate21.4%
View Profile

How has Longoria managed to post his highest home run rate in four seasons at the age of 30? He is hitting the ball harder, but Longoria is also hitting the ball higher, as his ground ball rate is the lowest of his career. As long as he can keep this up, Longoria could eclipse his career high of 33 home runs, but it's hard to see him maintaining a .321 BABIP, given his batted ball profile.

As is, Longoria ranks just 10th among third basemen in Fantasy value, and he could fall further back to the pack if his batting average sags. There may be no better time to sell Longoria than now.

Shortstop: Danny Espinosa, Nationals

Danny Espinosa
NYM • SS • #88
2016 STATS, per StatCorner
GB Rate33.7%
Pulled Flyball Rate61.4%
K Rate27.2%
View Profile

By the time this weekend's series with the Giants rolls around, Espinosa's job security could be in danger. Trea Turner is settling in as a regular,Ryan Zimmerman is off the DL, and the Nationals won't have the DL slot they're enjoying during their current two-game series in Cleveland. Does Espinosa offer enough value for Fantasy owners to worry about his playing time?

In going the Duvall route -- hitting fewer grounders while pulling flies more often than anyone besides Dozier -- Espinosa has made himself valuable to Fantasy owners. He ranks 15th among shortstops in Rotisserie value, so he has been a reasonable alternative for the MI slot in a standard mixed league. His power appears to be legit, and his BABIP is not inflated, but Espinosa has struck out 29 times in 72 July at-bats. Given his high strikeout rates of the past, it's entirely possible that Espinosa will whiff his way out of Fantasy relevance, if not an everyday job.

Outfield: Chris Davis, Orioles; Charlie Blackmon, Rockies; Adam Duvall, Reds

Chris Davis
BAL • 1B • #19
2016 STATS, per StatCorner
GB Rate32.8
Pulled Flyball Rate53.8%
K Rate34.0%
View Profile

Davis has been an enigma for some time now, as his power production has fluctuated even more frequently than his batting average. Whether Davis finishes closer to 30 homers or 40 homers is anybody's guess, but over his career, he has actually compiled a .317 BABIP. Though he has been brutal for batting average in two of the last three seasons, the odds would seem to favor Davis hitting for a much higher average going forward. He is one of a small number of players who hit with such authority that he can defy the BABIP gods, despite having a profile that would suggest just the opposite.

Charlie Blackmon
COL • CF • #19
2016 STATS, per StatCorner
GB Rate31.9%
Pulled Flyball Rate55.6%
K Rate18.2%
View Profile

Blackmon's inclusion in this group surprised me, but he has been pulling flyballs at an exceedingly high rate for three seasons now. This season, he has inched closer to full Duvall mode by hitting grounders at a career-low rate. Still, Blackmon is good enough at avoiding Ks that we shouldn't look for him to take a mammoth plunge in batting average.

That said, while his current .300 average looks believable based on his history, it looks unsustainable given his newfound aversion to grounders. Given the rumors of Blackmon getting traded out of Colorado, it might be hard to sell him, but it's worth a try. If he finds himself with a new team, the combination of park effects and batting average regression could be mean a substantial overall dropoff in production, even if his decrease in batting average is relatively modest.

Adam Duvall
ATL • LF • #14
2016 STATS, per StatCorner
GB Rate36.4%
Pulled Flyball Rate53.0%
K Rate26.6%
View Profile

You can't have an All-Duvall team without Duvall. Having already experienced BABIP regression in June, the window to sell Duvall has long since passed. In July, Duvall has hit only one home run, and suddenly, he is no longer hitting flies at a high rate. Over his career, Duvall has been an extreme flyball hitter, so the power outage could be short-lived. Rather than try to trade him, stash Duvall for now and see if he can reestablish his value in the coming weeks.

Designated Hitter: Luis Valbuena, Astros

Luis Valbuena
LAA • 3B • #18
2016 STATS, per StatCorner
GB Rate35.6%
Pulled Flyball Rate58.1%
K Rate23.1%
View Profile

By making Valbuena the DH, I found a way to keep him in the lineup, just the like the Astros have done this season, even with an influx of rookies. With this week's arrival of Alex Bregman, Valbuena will need to maintain his production to keep an everyday job. He is the same type of hitter he was last season, when he hit .224 with 25 home runs in 132 games, yet this season, he has a career-high .261 batting average. With the batting average regression that seems imminent, it's easy to imagine Valbuena being reduced to a utility role in the weeks to come.