In my recent "Catcher-22" column, I discovered that the market for catchers looks very different now than it did back in March. The unexpected emergence of several players, including Dioner Navarro, Ryan Doumit, Bengie Molina and Rod Barajas, has increased the supply of quality catchers far beyond Martin, McCann, and Find Another Plan. Not all of these surprise performances will last all year, but several of the younger crop, like Navarro and Doumit, look like they are for real.

In the second installment of this series on position scarcity, we move on to the infield corners to see if the supply of quality players has followed our expectations. The market for first basemen is typically the opposite of the catcher market, with a wide range of high-scoring Fantasy options. The third baseman market usually falls somewhere in between these two extremes. Has the rapid arrival of up-and-coming stars dampened the value of established stars at these positions? Or have disappointing performances by those expected to be in the top tier increased the worth of the top performers? And how have the markets for second- and third-tier players been affected?

To get an overview of these markets, I have ranked the regular players at each position by RC/27, a per-game measure that encompasses a variety of offensive events. Then I made a few adjustments to the rankings based on sample size (e.g., Chase Headley, Russell Branyan) and track record (e.g., Ryan Howard, Ryan Zimmerman, Russell Branyan again). For each position, players have been placed into four categories: The Elite, The Stars, The Bubble Guys and The Duds. Bear in mind that there is a mixed-league bias to these labels, and that many of The Duds are defensible choices for AL- or NL-only leagues, albeit of the last resort variety.

All data presented below is for the season to date through Friday, June 20.

First Basemen

The Elite: From a skills and performance perspective, no one is playing in the same league as Lance Berkman and Albert Pujols. Adrian Gonzalez and Justin Morneau could arguably be counted among The Elite due to their RBI totals, but neither has shown the power/contact combination that Berkman and Pujols have. With Pujols set to return in early July, these two will find themselves in a class by themselves at the season's end.

Player Walk Rate Whiff Rate Iso Power H/BIP Runs Created RC/27
Lance Berkman 13% 16% 0.337 37% 85 12.9
Albert Pujols 19% 10% 0.284 33% 69 12.3

The Stars: Some of the players expected to be among the elite have been a cut below this year. The Isolated Power averages of Ryan Howard, Prince Fielder, Justin Morneau and Mark Teixeira have all dropped significantly from last year. Howard's drop in production has been the most surprising. His batting average, which has lingered in the low .200s, is partially the product of an inexplicably low 27 percent H/BIP rate. The market for elite-level first basemen looks sparse right now, but there is a "buy low" opportunity to get Howard or some of the other underachieving first basemen right now, as their odds of rebounding in the second half look good.

Player Walk Rate Whiff Rate Iso Power H/BIP Runs Created RC/27
Jason Giambi 15% 19% 0.308 23% 46 8.0
Conor Jackson 12% 9% 0.188 31% 44 7.2
Kevin Youkilis 9% 19% 0.220 34% 49 7.1
Adrian Gonzalez 9% 22% 0.260 32% 56 6.8
Prince Fielder 13% 19% 0.217 31% 51 6.8
Nick Johnson 23% 23% 0.211 24% 22 6.7
Justin Morneau 8% 16% 0.181 34% 48 6.2
Derrek Lee 9% 17% 0.221 31% 49 5.7
Ryan Howard 13% 37% 0.262 27% 43 5.2
Mark Teixeira 12% 18% 0.166 29% 41 5.1

The Bubble Guys: These are the middle-of-the-pack first basemen who could usually be found on waivers in 10 percent or more of the mixed leagues on CBSSports.com. If you were looking for a fill-in for Albert Pujols, Nick Johnson or Paul Konerko, the best options available were probably among the players on this list. What is interesting about this group is how low they have set the standard for replaceability. The median RC/27 level for 1B, according to my preseason projections, was supposed to be 6.4, but in actuality it is only 5.2. That makes James Loney our official pick at 1B for Mr. Bubble. If the median RC/27 were a run or so higher, as it normally would be, you could automatically scan the list free agent first basemen to fill a hole at your utility position. However, with the average 1B producing at such a low level, you are probably better off looking among the outfielders and designated hitters first.

Player Walk Rate Whiff Rate Iso Power H/BIP Runs Created RC/27
Joey Votto 9% 20% 0.214 31% 41 6.2
Todd Helton 17% 15% 0.129 30% 44 6.0
Casey Kotchman 6% 6% 0.142 30% 38 5.6
James Loney 9% 14% 0.157 34% 40 5.2
Carlos Pena 12% 34% 0.203 29% 31 5.1
Kevin Millar 12% 16% 0.166 26% 37 4.9

The Duds: All of the players below should be avoided in mixed leagues, with the possible exception of Konerko. It may be some time before he is activated from the DL, but if -- and only if -- he shows signs of hitting with his usual power, he could be a decent pickup. My preseason projection of a 7.7 RC/27 looks wildly optimistic now.

Player Walk Rate Whiff Rate Iso Power H/BIP Runs Created RC/27
Lyle Overbay 15% 22% 0.142 32% 34 4.7
Mike Jacobs 5% 26% 0.295 24% 30 4.7
Ryan Garko 9% 16% 0.117 28% 31 4.7
Carlos Delgado 10% 23% 0.179 27% 35 4.7
John Bowker 5% 22% 0.184 30% 23 4.6
Paul Konerko 13% 19% 0.154 23% 27 3.9
Daric Barton 14% 27% 0.105 30% 26 3.8
Adam LaRoche 10% 26% 0.142 27% 26 3.5
Richie Sexson 10% 33% 0.159 28% 22 3.5
Ross Gload 4% 11% 0.032 26% 9 2.0

Third Basemen

The Elite: As with the first basemen, you would think this would be a larger group. David Wright, Miguel Cabrera and Ryan Braun are conspicuously absent. In Cabrera's case, a decrease in power is the problem, and Braun is getting cheated with a 31 percent H/BIP that should be four or five percentage points higher. Both Isolated Power and H/BIP are off for Wright. There are the usual questions about Cabrera's conditioning, but at minimum, Wright and Braun should have a better second half. As A-Rod and Chipper garner all of the attention, this presents an opportunity to get either of them, or possibly Cabrera, at a discount.

Player Walk Rate Whiff Rate Iso Power H/BIP Runs Created RC/27
Chipper Jones 16% 12% 0.239 40% 77 12.7
Alex Rodriguez 11% 21% 0.290 37% 54 10.4

The Stars: The second tier of third basemen has grown, not only because of the dropoffs experienced by Wright, Braun and Cabrera, but the addition of rookies Evan Longoria and Chase Headley. You can also add Ramon Vazquez, Jorge Cantu and Mark Reynolds to the ranks of productive third basemen. Each has improved his overall skill set to the point where any of the trio can be considered a solid pick for a mixed league roster. Back in March, Reynolds was the only one of this group who could have even been considered as a borderline roster candidate. While Vazquez belongs in this tier, keep in mind that his .330ish batting average has been inflated by a 37 percent H/BIP, and that his true place on this RC/27 ranking is somewhere in the Chone Figgins/Jorge Cantu neighborhood. That's still a pretty nice place to live. The bounty of these productive third basemen is good news for owners, because they will probably come more cheaply now than earlier in the season, when they seemed to be more scarce.

Player Walk Rate Whiff Rate Iso Power H/BIP Runs Created RC/27
Chase Headley 0% 37% 0.438 50% 5 13.0
Aramis Ramirez 13% 18% 0.212 32% 54 7.8
Ramon Vazquez 11% 19% 0.186 37% 31 7.4
Ryan Braun 5% 21% 0.285 31% 54 6.6
Carlos Guillen 11% 14% 0.159 33% 43 6.3
Joe Crede 9% 14% 0.253 27% 41 6.2
Mark Reynolds 11% 36% 0.251 33% 44 6.2
David Wright 13% 18% 0.199 30% 50 6.0
Miguel Cabrera 10% 20% 0.182 32% 44 5.8
Chone Figgins 16% 22% 0.046 38% 25 5.8
Jorge Cantu 7% 19% 0.211 31% 45 5.6
Evan Longoria 11% 27% 0.224 30% 36 5.5
Garrett Atkins 4% 13% 0.162 33% 40 5.1

The Bubble Guys: In his first 22 games this year, Russell Branyan is putting up A-Rod stats, but his track record suggests something much more modest in store for the long haul. Despite his career .231 average, Branyan has enough power to be a legitimate bubble candidate. Ryan Zimmerman's production and Eric Chavez's playing time have been hampered by injuries, thus making them surprising entries on the bubble list. With their current numbers, both actually look more like "Duds" than like "Bubble Guys." However, with more ABs, they should be producing at a level similar to Mr. Bubble himself, Casey Blake. It is still not known when Zimmerman will return from his shoulder injury, but with Chavez, Blake, Ty Wigginton and the surprising Rich Aurilia (.290 average and 23 RBI in 186 AB) all available in a majority of leagues, it is unnecessary to burn a reserve slot on him if you have a better use for it.

Player Walk Rate Whiff Rate Iso Power H/BIP Runs Created RC/27
Russell Branyan 14% 38% 0.530 32% 23 13.0
Rich Aurilia 10% 12% 0.137 31% 28 5.8
Ty Wigginton 10% 18% 0.154 30% 23 5.6
Troy Glaus 14% 18% 0.181 29% 41 5.6
Casey Blake 8% 20% 0.171 31% 35 5.5
Mike Lowell 8% 14% 0.222 28% 33 5.5
Scott Rolen 10% 16% 0.148 31% 28 5.3
Edwin Encarnacion 10% 19% 0.210 26% 37 5.1
Blake DeWitt 9% 17% 0.126 31% 30 5.1
Eric Chavez 5% 20% 0.171 33% 10 5.0
Ronnie Belliard 14% 22% 0.202 26% 15 4.9
Adrian Beltre 10% 19% 0.199 25% 39 4.9
Alex Gordon 9% 24% 0.150 33% 39 4.9
Ryan Zimmerman 4% 18% 0.170 28% 25 4.2

The Duds: For owners who picked up Pedro Feliz during his hot May, when he batted .311, it's time to revisit your options. He has settled into his usual pedestrian performance and skill indicator levels. At least he is predictable: it's June, so there must be a comic book flick at the multiplex and Feliz must be batting in the .250s. If you have run out of other options, and you are looking for a potential bargain third baseman from this group, try Melvin Mora. He is hitting for power and contact, but his average is down in the .240s because of a 25 percent H/BIP. This rate is far below his norm, despite a decreasing flyball rate that, along with his power numbers, would suggest a higher H/BIP is in order. If luck evens out for Mora, his batting average should return to its usual level in the .270s.

Player Walk Rate Whiff Rate Iso Power H/BIP Runs Created RC/27
Kevin Kouzmanoff 4% 22% 0.158 31% 36 4.4
Jack Hannahan 14% 29% 0.113 30% 25 4.3
Jose Bautista 9% 25% 0.158 31% 27 4.2
Pedro Feliz 7% 10% 0.154 26% 29 4.1
Jose Castillo 7% 18% 0.161 30% 29 3.8
Melvin Mora 7% 15% 0.172 25% 29 3.7
Bill Hall 8% 28% 0.172 26% 22 3.3
Mike Lamb 6% 14% 0.078 26% 16 2.6

To recap, this review of the market for corner infielders shows that both positions have been plagued by disappointing performances from several players who were expected to be elite superstars. This means that the trade price for a solid, but unspectacular, corner infielder should be dropping. The downgrading of production has been especially apparent for first basemen. In terms of RC/27, the median first baseman has actually been less productive (5.2) than the median third baseman (5.5). There are also more third basemen than first basemen producing at a high level on a per-game basis, so third base (in addition to outfield and designated hitter) is a better source for finding players to fill an open utility slot.

Glossary
Runs Created per 27 Outs (RC/27) -- An estimate of how many runs a lineup would produce per 27 outs if a particular player occupied each spot in the order; ex. the RC/27 for Miguel Cabrera would predict the productivity of a lineup where Cabrera (or his statistical equal) batted in all nine spots; created by Bill James
Component ERA (ERC) -- An estimate of a what a pitcher's ERA would be if it were based solely on actual pitching performance; created by Bill James
Base Hits per Balls in Play (H/BIP) -- The percentage of balls in play (at bats minus strikeouts and home runs) that are base hits; research by Voros McCracken and others has established that this rate is largely random and has a norm of approximately 30%
Isolated Power -- The difference between slugging percentage and batting average; created by Branch Rickey and Allan Roth
Walk Rate -- Walks / (at bats + walks)
Whiff Rate -- Strikeouts / at bats

Al Melchior was recently a Fantasy columnist and data analyst for Baseball HQ and will be providing advice columns for CBSSports.com. Click here to send him a question. Please put "Melchior" in the subject field.