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Midway through June, many fantasy baseball owners are waking up and realizing that change is necessary to capture a championship.

Gamers will patiently stay the course after a rough April and maybe even blame small sample sizes throughout May. Yet with two-and-a-half months in the books, everyone must address his or her strengths and weaknesses in each position and category.

Also, a lot of people just like to trade. Even if the season is going peachy, there's always an opportunity to get even better. Most leagues have a trade deadline at the end of July or middle of August, and most owners procrastinate just like real MLB general managers.

Don't fall asleep at the wheel. If your team contains a clear area for improvement, look to fill it now before the problem compounds over the next month or two. Of course, a trade only helps if it's a good deal. That's where the value chart comes in handy.

These rankings are meant to help owners answer the question that comes with every offer: Is this a good deal? Team needs often alter the situation, but this serves as a guide for what makes sense in a vacuum while also working as rest-of-season rankings.

This is the first installment of Bleacher Report's Trade Value Chart, so let's start with some important notes.

How It Works

Each player is assigned a rating on a 1-10 scale. A 10 is reserved for a select few mega-superstars who will require an offer his or her owner can't refuse. Someone rated a 4 should be considered a replacement-level player in standard mixed leagues, meaning he holds little to no trade value.

While team needs play into trades, someone with a surplus of saves but no power should offer a 6 closer for a 6 or 6.5 position hitter. Maybe try your luck for a 7.

Don't, however, trade an 8 for two 4s. Taking into account the replacement-level player added with the cleared roster spot, that 8 should land two players combining for 12.5 or higher to improve your team (or a 12 for an even exchange). A one-for-three, therefore, would require the 8 to net at least 16 points, preferably 16.5 or more. Trading a star for multiple players isn't advised in most situations.

The scale is graded for a rotisserie mixed league with the standard five-by-five categories for hitters (BA, R, HR, RBI, SB) and pitchers (W, ERA, WHIP, K, SV). A 4 or 5 on this chart is a solid starter in AL- or NL-only formats. The grading system uses Yahoo Sports position eligibility and assumes the league starts one catcher. Carlos Santana would merit a higher rating in a league counting on-base percentage, and Wade Davis' value soars if holds factor into the scoring. Know your league.

Also, it's your team. A good trade on paper doesn't always improve your specific squad. Don't feel compelled to make a trade just because it passes the value test.

Trade Value Chart

Rank Player POS Value Rank Player POS Value 1 Mike Trout OF 10 126 Gio Gonzalez SP 5.5 2 Paul Goldschmidt 1B 10 127 Shelby Miller SP 5.5 3 Miguel Cabrera 1B 10 128 Greg Holland RP 5.5 4 Giancarlo Stanton OF 10 129 Starlin Castro SS 5.5 5 Bryce Harper OF 10 130 Denard Span OF 5.5 6 Clayton Kershaw SP 9.5 131 A.J. Ramos RP 5.5 7 Andrew McCutchen OF 9.5 132 Chris Carter 1B/OF 5.5 8 Anthony Rizzo 1B 9.5 133 Alex Wood SP 5.5 9 Max Scherzer SP 9.5 134 Jake Odorizzi SP 5.5 10 Josh Donaldson 3B 9.5 135 Pablo Sandoval 3B 5.5 11 Chris Sale SP 9.5 136 Garrett Richards SP 5.5 12 Adam Jones OF 9 137 Marcus Semien 2B/3B/SS 5.5 13 Jose Bautista OF 9 138 Jason Heyward OF 5.5 14 Jose Altuve 2B 9 139 Jonathan Lucroy C/1B 5.5 15 Carlos Gomez OF 9 140 Xander Bogaerts 3B/SS 5 16 Hanley Ramirez SS/OF 9 141 Victor Martinez 1B 5 17 Jose Abreu 1B 8.5 142 Salvador Perez C 5 18 Edwin Encarnacion 1B 8.5 143 Howie Kendrick 2B 5 19 Corey Kluber SP 8.5 144 Neil Walker 2B 5 20 Justin Upton OF 8.5 145 Huston Street RP 5 21 Adrian Gonzalez 1B 8.5 146 Jeff Samardzija SP 5 22 Yasiel Puig OF 8.5 147 Jose Quintana SP 5 23 Troy Tulowitzki SS 8.5 148 Mike Fiers SP 5 24 Felix Hernandez SP 8.5 149 Mark Trumbo 1B/OF 5 25 Todd Frazier 1B/3B 8 150 Josh Harrison 2B/3B/OF 5 26 Joey Votto 1B 8 151 Mark Melancon RP 5 27 Chris Archer SP 8 152 Trevor Bauer SP 5 28 Freddie Freeman 1B 8 153 Ben Revere OF 5 29 Gerrit Cole SP 8 154 Leonys Martin OF 5 30 Starling Marte OF 8 155 Carlos Correa SS 5 31 David Price SP 8 156 Jonathan Papelbon RP 5 32 Madison Bumgarner SP 8 157 Jeurys Familia RP 5 33 George Springer OF 8 158 Avisail Garcia OF 5 34 Nelson Cruz OF 8 159 Shin-Soo Choo OF 5 35 Zack Greinke SP 8 160 Mike Moustakas 3B 5 36 Nolan Arenado 3B 8 161 Scott Kazmir SP 5 37 Prince Fielder 1B 7.5 162 Pedro Alvarez 1B/3B 5 38 Michael Brantley OF 7.5 163 Josh Reddick OF 5 39 A.J. Pollock OF 7.5 164 Travis d'Arnaud C 5 40 Johnny Cueto SP 7.5 165 Shawn Tolleson RP 5 41 Albert Pujols 1B 7.5 166 Adam LaRoche 1B 5 42 Jason Kipnis 2B 7.5 167 Jesse Chavez SP 5 43 Dee Gordon 2B 7.5 168 Yan Gomes C 5 44 Manny Machado 3B 7.5 169 Ben Zobrist 2B/SS/OF 5 45 Buster Posey C/1B 7.5 170 Daniel Murphy 2B/3B 5 46 Kris Bryant 3B 7.5 171 Andre Ethier OF 5 47 Brian Dozier 2B 7.5 172 Byron Buxton OF 5 48 Sonny Gray SP 7 173 Torii Hunter OF 5 49 Ryan Braun OF 7 174 Joakim Soria RP 5 50 Cole Hamels SP 7 175 Francisco Rodriguez RP 5 51 Jake Arrieta SP 7 176 John Lackey SP 5 52 Jacob deGrom SP 7 177 Adam Lind 1B 5 53 Joc Pederson OF 7 178 Jimmy Rollins SS 5 54 Jose Reyes SS 7 179 Wade Davis RP 5 55 Kolten Wong 2B 7 180 Andrew Miller RP 5 56 Matt Harvey SP 7 181 Mitch Moreland 1B 5 57 Matt Carpenter 3B 7 182 Joey Gallo 3B 5 58 Aroldis Chapman RP 7 183 Dexter Fowler OF 4.5 59 Craig Kimbrel RP 7 184 Curtis Granderson OF 4.5 60 Carlos Carrasco SP 6.5 185 Yasmani Grandal C/1B 4.5 61 Jhonny Peralta SS 6.5 186 Lance McCullers SP 4.5 62 Yoenis Cespedes OF 6.5 187 Santiago Casilla RP 4.5 63 Kyle Seager 3B 6.5 188 Carson Smith RP 4.5 64 Eric Hosmer 1B 6.5 189 Anibal Sanchez SP 4.5 65 Billy Hamilton OF 6.5 190 Elvis Andrus SS 4.5 66 Dallas Keuchel SP 6.5 191 Luke Gregerson RP 4.5 67 Anthony Rendon 2B/3B 6.5 192 Mat Latos SP 4.5 68 Brett Gardner OF 6.5 193 Matt Wieters C 4.5 69 Michael Pineda SP 6.5 194 Kendrys Morales 1B 4.5 70 Kenley Jansen RP 6.5 195 Billy Burns OF 4.5 71 Francisco Liriano SP 6.5 196 DJ LeMahieu 2B 4.5 72 Michael Wacha SP 6.5 197 Jason Grilli RP 4.5 73 David Robertson RP 6.5 198 Maikel Franco 3B 4.5 74 Dustin Pedroia 2B 6.5 199 Hunter Pence OF 4.5 75 Charlie Blackmon OF 6.5 200 Matt Holliday OF 4.5 76 Jacoby Ellsbury OF 6.5 201 Clay Buchholz SP 4 77 Russell Martin C 6.5 202 Taijuan Walker SP 4 78 Lorenzo Cain OF 6.5 203 Devon Travis 2B 4 79 Jon Lester SP 6.5 204 Jean Segura SS 4 80 Mookie Betts 2B/OF 6.5 205 Noah Syndergaard SP 4 81 Carlos Santana C/1B/3B 6.5 206 Cameron Maybin OF 4 82 Mark Teixeira 1B 6.5 207 Jake McGee RP 4 83 Robinson Cano 2B 6.5 208 Brandon Phillips 2B 4 84 Danny Salazar SP 6.5 209 Wilmer Flores 2B/SS 4 85 Masahiro Tanaka SP 6.5 210 Derek Norris C 4 86 Lucas Duda 1B 6 211 Ryan Zimmerman 1B/3B/OF 4 87 Jordan Zimmermann SP 6 212 Hisashi Iwakuma SP 4 88 J.D. Martinez OF 6 213 Tyler Clippard RP 4 89 Chris Davis 1B/3B 6 214 Brad Boxberger RP 4 90 David Ortiz 1B 6 215 Alexei Ramirez SS 4 91 Kole Calhoun OF 6 216 Marcell Ozuna OF 4 92 Brandon Belt 1B 6 217 Yasmany Tomas 3B/OF 4 93 Trevor Rosenthal RP 6 218 Joe Panik 2B 4 94 Ian Desmond SS 6 219 Justin Turner 2B/3B/SS 4 95 Evan Longoria 3B 6 220 Trevor Plouffe 3B 4 96 Jason Hammel SP 6 221 Logan Forsythe 1B/2B 4 97 James Shields SP 6 222 Andrelton Simmons SS 4 98 Dellin Betances RP 6 223 Nori Aoki OF 4 99 Adrian Beltre 3B 6 224 Justin Verlander SP 4 100 Jose Fernandez SP 6 225 Chris Heston SP 4 101 Stephen Strasburg SP 6 226 Brad Ziegler RP 4 102 Corey Dickerson OF 6 227 John Axford RP 4 103 Gregory Polanco OF 6 228 Michael Cuddyer 1B/OF 4 104 Carlos Martinez SP 6 229 Wil Myers 1B/OF 4 105 Stephen Vogt C/1B 6 230 Kevin Pillar OF 4 106 Evan Gattis C 6 231 Brett Lawrie 2B/3B 4 107 Drew Storen RP 6 232 Matt Shoemaker SP 4 108 Ian Kinsler 2B 6 233 Jesse Hahn SP 4 109 Glen Perkins RP 6 234 Jung Ho Kang 3B/SS 4 110 Lance Lynn SP 6 235 Ender Inciarte OF 4 111 Tyson Ross SP 6 236 Mike Bolsinger SP 4 112 A.J. Burnett SP 6 237 David Wright 3B 4 113 Alex Gordon OF 6 238 Collin McHugh SP 4 114 Brandon Crawford SS 5.5 239 Ken Giles RP 4 115 Zach Britton RP 5.5 240 Wilson Ramos C 4 116 Christan Yelich OF 5.5 241 Yovani Gallardo SP 4 117 Steven Souza OF 5.5 242 Chase Headley 1B/3B 4 118 Cody Allen RP 5.5 243 Julio Teheran SP 4 119 Alex Rodriguez 3B 5.5 244 Martin Prado 2B/3B/OF 4 120 Jay Bruce OF 5.5 245 Hector Rondon RP 4 121 Brian McCann C/1B 5.5 246 Ryan Howard 1B 4 122 Brandon Moss 1B/OF 5.5 247 Luis Valbuena 2B/OF 4 123 Koji Uehara RP 5.5 248 Jorge Soler OF 4 124 Carlos Gonzalez OF 5.5 249 Jaime Garcia SP 4 125 Matt Kemp OF 5.5 250 Adam Eaton OF 4 Author's Values

Believable Breakouts

These guys have jumped far above their preseason value, but don't mistakenly view them as sell-high candidates. Their breakouts are for real.

Chris Archer, SP, Tampa Bay Rays

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As crazy as it may seem, Chris Archer came close to surpassing Felix Hernandez in the ace hierarchy. If he keeps this up, he'll make the jump soon enough.

The Tampa Bay Rays righty ranks second among all qualified starters with a 2.08 fielding independent pitching (FIP) and third with a 26.4 strikeouts-minus-walks percentage (K-BB%). Over his last four starts, the 26-year-old has notched a 1.20 ERA, 43 strikeouts and one walk.

Even if he's not quite on par with Clayton Kershaw, Max Scherzer and Chris Sale due to a lesser track record, Archer is a legitimate No. 1 fantasy starter.

Manny Machado, 3B, Baltimore Orioles

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Manny Machado is already one homer away from matching his career high, and he has already swiped a career-best nine bases. Labeling him a sell-high option, however, is foolish.

The biggest reason: He's a 22-year-old commonly pegged as a future superstar. While he's not crushing dudes like Bryce Harper, the gap power has evolved into fence-clearing pop. Machado has also exhibited better plate discipline, upping his walk percentage to 8.8 percent.

Health is the only real concern here. As long as he stays on the field, Machado is a top-50 player going forward.

A.J. Pollock, OF, Arizona Diamondbacks

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Everyone who envisioned A.J. Pollock as this year's Michael Brantley can take a bow. The outfielder is batting .317/.358/.486 with eight homers and 14 steals through 63 games. In 553 plate appearances dating back to last year, he's hitting .308 with 15 homers and 28 steals, which looks like one heck of a top fantasy contributor.

At this point, preferring him to Brantley—whose power has regressed with four long balls—is more than fair.

Cause for Concern

On one hand, trading any of these guys makes no sense. It's poor practice to deal someone when his value reaches a nadir, but there's also the chance someone overpays for name recognition.

Don't bury these marquee players just yet, but their rest-of-season value reflects their tumultuous struggles.

Robinson Cano, 2B, Seattle Mariners

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It's getting tougher and tougher to dismiss Robinson Cano's terrible start. The usually reliable second baseman is batting .236/.277/.323 with two homers. How long can owners trust their expensive investment when Joe Panik and Logan Forsythe are outperforming him by miles?

The power drop, although extreme, isn't unbelievably stunning considering his 14 home runs last year. Trading Yankee Stadium's short porch for Safeco Field has robbed the lefty of several line-drive shots.

On the other hand, a career .307 hitter with six straight .300 seasons hitting .236 is hard to swallow. While his walk (5.2) and strikeout (17.0) percentages have both trended in the wrong directions, he's still far too skilled to not catch fire.

Even when that day comes, Cano will not regain his throne as baseball's premier second baseman. Consider selling for 75 cents on the dollar.

Evan Longoria, 3B, Tampa Bay Rays

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With only six homers this year, Evan Longoria has 28 deep flies through his past 956 plate appearances. He was never one to hit for average and hasn't stolen more than five bases in a season since 2010. Without elite power, he's far from an elite fantasy third baseman.

Throw in a bruised wrist, and Longoria's stock continues to tumble.

Matt Harvey, SP, New York Mets

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This isn't time to panic from a four-start stretch during which Matt Harvey surrendered 27 hits and 20 runs. He assuaged those fears by tossing seven shutout innings against the powerful Toronto Blue Jays on Tuesday night.

Owners, however, must beware the New York Mets protecting their young ace. While they're not likely to shut him down like the Washington Nationals did with Stephen Strasburg, they may skip a start once in a while or attempt the six-man rotation again with Steven Matz.

Regardless of the action they take, Harvey isn't hurling 200 innings this season, especially if they want him available for a possible postseason trip. Keep that in mind, even as he rights the ship.

Greg Holland, RP, Kansas City Royals

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After surrendering three runs on Monday, Greg Holland now has a 3.52 ERA and 1.24 WHIP this season. Those numbers don't even do his troubles justice, as the closer has collected 13 strikeouts and 10 walks through 15.1 innings.

With his velocity down and a pectoral injury limiting his appearances, Holland owners need to start worrying. If a frightened one tries to pawn off the Kansas City Royals stopper, shy away unless he or she offers a significant discount.

All stats courtesy of FanGraphs.

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