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Our MLB editor files dispatches from the Winter Meetings in Las Vegas in Notes From Sin City.

While the baseball world watches and waits for Mark Teixeira and CC Sabathia to make up their mind, or even just for a scrap from super-agent Scott Boras, closer Francisco Rodriguez has become the belle of the Winter Meetings ball.

Though the Mets have yet to publicly acknowledge that they have signed the record-setting reliever, it is widely believed that Rodriguez has agreed to a three-year deal with the club worth roughly $37 million and containing a vesting option for a fourth year that could push its value past $50 million.

Problem solved, right? Third straight September swoon averted, right? Hardly.

Look, there's no doubt that the Mets' biggest need heading into the offseason was to fix their wretched bullpen. And there's no doubt that Rodriguez is a big part of the puzzle in that regard. But they also play in the same division as the reigning world champions and a pair of clubs in the Marlins and Braves who are capable of winning 85-plus games if things break right.

New York has some elite talent -- Jose Reyes, Carlos Beltran, David Wright, Johan Santana -- but it also has a roster that is perilously thin at the margins.

With the playoff chase coming down to the wire, our MLB editor rounds up the five biggest pennant race stories in Eye Toward October.

- Not Ready for Primetime: Someone has to win the AL Central. Next Thursday either the Twins or White Sox will take the field at Tropicana Field in Tampa Bay with a shot at winning the World Series. But after a bullpen meltdown in Chicago and terrible Francisco Liriano start in Minneapolis, it doesn't seem like either team wants it very much.

Roughly a week ago, I wrote about how the Central race was the only one with any real drama, about how the NL wild-card race had lost its appeal because the Mets and Brewers seemed so fragile. Now, the opposite seems true. While the Mets and Brewers run their aces out on three days of rest and scrape and claw for every run, the Twins and White Sox seem determined to back into the playoff picture.

Of course anything can happen once a team gets into the postseason, but the Rays would be an exceptionally tough opponent even if the Twins or White Sox were playing well right now. With both teams playing poorly, it doesn't seem like the winner of the division will matter too much. Either way, it could be a quick first-round exit.

With the playoff chase coming down to the wire, our MLB editor rounds up the five biggest pennant race stories in Eye Toward October.

- Champs Getting Stronger: The Red Sox have suddenly opened up a sizable four-game edge in the wild-card race after winning Tuesday while the White Sox and Twins lost. The news gets even better when you consider that Mike Lowell and Josh Beckett are set to return on Friday, with J.D. Drew and pitcher Bartolo Colon possibly returning next week.

It's easy to compare the 2008 Sox to the last Boston team that defended a title. Like this year's version, the 2005 team was ravaged by injuries to key players. There's one major difference, though, and that's the depth in the organization. GM Theo Epstein's vision of making the Red Sox a nine-figure player development machine has bloomed fully, and because of it Boston has a very real chance to repeat.

Their minor league system is among the most robust in the game, far different from the Dan Duquette era, and it's enabled the Red Sox to plug many of the holes they've had over the course of a trying season.

When Julio Lugo went down, Jed Lowrie came up and improved the team. When the team needed a spot starter for Josh Beckett, they turned to pitching prospect Michael Bowden. When the team needed another outfielder because of Drew's injury, they were able to deal a prospect with good upside for Mark Kotsay because of their minor league depth.

With the playoff chase coming down to the wire, our MLB editor rounds up the five biggest pennant race stories in Eye Toward October.

- Arizona Aces Faltering: One of the reasons I, and several other pundits, think the Diamondbacks will be a very dangerous team in October is because of the Brandon Webb-Dan Haren-Randy Johnson trio at the top of their rotation. It has the potential to be devastating in the postseason, but if they don't get their collective acts together, it might be a moot point.

Haren, Webb and Johnson have started the last three games for the Snakes, putting up this cumulative line: 13 IP, 24 H, 16 ER. All three are seasoned pros, and if this were June or July, this streak would barely be worth batting an eyelash over.

It's September, though. Time is short and the Diamondbacks' edge in the NL West is slim. Arizona can't afford another stretch like this from the top three pitchers on its staff.

With the playoff chase coming down to the wire, our MLB editor rounds up the five biggest pennant race stories in Eye Toward October.

- The Cavalry Arrives: The rosters expand from 25 to 40 today, allowing clubs that have fallen out of contention to give their younger players a taste of the majors and giving contenders the chance to add another bullpen arm or bench bat for the stretch run.

A few players to keep an eye on that could actually contribute to contenders down the stretch:

Doug Slaten, RP, Diamondbacks - Should give Arizona a much-needed left-handed bullpen arm for the final month.

James McDonald, SP, Dodgers - Could get a spot start or two.

Mat Gamel, 3B, Brewers - Shortstop Alcides Escobar has gotten a little more buzz, but Gamel could be in the platoon mix with Bill Hall and Russell Branyan plenty over the final month.

Jonathon Niese, SP, Mets - He's starting against Milwaukee on Tuesday.

Phil Humber, RP, Twins - One of the players acquired by Minnesota in the Johan Santana deal, Humber will start out in the bullpen, which hasn't been as strong as the Twins would like, but he could also make a spot start if needed.

John Jaso, C, Rays - Whither David Price? As Pat Lackey pointed out last week, he might not be as ready as most people think. Jaso has a gaudy .820 OPS at Triple-A Durham, and with Dioner Navarro nursing the bumps and bruises of a long season, he could spell the catcher effectively.