Red Sox are officially World Series favorites.Oddsshark passed along the latest odds http://www.angelsfanproshop.com/authentic-zack-cozart-jersey , which have the Red Sox at +190 favorites to win the AL pennant. The Dodgers are +245 favorites to win the NL.Boston is currently the best team in baseball under any possible measurement. The Red Sox are an MLB-best 85-35 with a plus-213 run differential, which is 18 runs better than any other team. The Houston Astros (plus-195) are the only team within 70 runs.Houston, the defending World Series champs, is listed at +210 to win the American League.The Dodgers likely owe their favorite status to their deadline trade for Manny Machado. Losers of four straight games coming into Tuesday, Los Angeles would be out of the postseason if it began today. The Arizona Diamondbacks lead the NL West by one game over the Dodgers and Colorado Rockies.Making matters even more surprising is that the Dodgers are a pretty heavy NL favorite. The Chicago Cubs (+400) are the only other team that have 4-to-1 odds or better. The Cubs currently have the NL's best record and are tied with the Dodgers for the league's best run differential.Perhaps the best value on the board is the Oakland Athletics at +1000. Oakland has been red hot over the last few months and has the type of offense that could go toe-to-toe with Boston and Houston's pitching staffs in October.American League OddsRed Sox +190Astros +210Yankees +350 Indians +600Athletics +1000Mariners +1400Angels +15000 Rays +35000Twins +45000National League OddsDodgers +245Cubs +400Brewers +750Phillies +800Braves +800Diamondbacks +800Nationals +1200Rockies +1800Cardinals +1800Pirates +2000Giants +3000Reds +50000 A Tuesday report suggested the Seattle Mariners were willing to trade many of their top players for the right return this offseason.According to Jeff Passan of Yahoo Sports, the Mariners have told teams that they will move "just about anyone" if the trade market is strong. In the same vein, Seattle is open to rebuilding.Mariners general manager Jerry Dipoto responded to the rumor later Tuesday Michael Saunders Jersey , per Greg Johns and Maria Guardado of MLB.com:"Clearly over-dramatized is the best way to put that. We're open-minded to different ways we can get better, but what we're hoping to achieve is to reimagine our roster to look at it in terms of what is our quickest path to a championship club."We know what the Astros, Red Sox, A's, Yankees and Indians look like. We don't want to be a perpetual competitor for the second wild card. We want to build a championship roster. If that means in 2019 we field as competitive a team as we can while earmarking and gathering talent, we're not looking to rip our club down. We're just too talented to do that."Passan noted that there are caveats involved since infielder Jean Segura has a no-trade clause, and the M's will ask for huge hauls in return for outfielder Mitch Haniger Ryan Goins Jersey , starting pitcher James Paxton and closer Edwin Diaz.Jon Heyman of Fancred later added that it "sounds" like the Mariners will keep Haniger, Diaz and pitcher Marco Gonzales but noted, "Everyone else is up for grabs."The Mariners missed the playoffs last season with an 89-73 record, and they have not reached the postseason since 2001, which is the longest active drought in Major League Baseball.Seattle appeared on track to end the drought during the first half of the 2018 season, but a second-half surge by the Oakland Athletics ended the Mariners' season early once again.Despite missing the playoffs, the Mariners had some hugely productive players on their roster last season.Offensively Wily Peralta Jersey , Segura hit .304 with 10 home runs, 63 RBI and 20 stolen bases, while Haniger hit .285 with 26 homers and 93 RBI.Also, impending free-agent designated hitter Nelson Cruz hit .256 and led the team with 37 home runs and 97 RBI.Pitching-wise, Paxton went 11-6 with a 3.76 ERA and 208 strikeouts in 160.1 innings.Diaz enjoyed one of the best seasons ever by a closer, as he posted a 1.96 ERA, struck out 124 batters over 73.1 innings and recorded an MLB-leading 57 saves.With 62 saves in 2008 http://www.royalsfanproshop.com/authentic-ryan-goins-jersey , Francisco Rodriguez is the only closer to finish with more saves in a single season than Diaz.One name that is likely to come up often in trade talks this offseason regardless of whether the Mariners tear down the roster is former ace Felix Hernandez.The six-time All-Star and 2010 American League Cy Young Award winner struggled through a career-worst season in 2018, as he went 8-14 with a 5.55 ERA.Hernandez may not have much left in the tank, but he has only one year remaining on his contract, which could make the 32-year-old a low-risk acquisition for pitching-needy teams.Prior to the start of the 2018 season, Baseball America ranked Seattle's farm system as the worst in Major League Baseball.Given the lack of talent coming through the pipeline and Seattle's inability to reach the playoffs, a rebuild may be the best way to make the Mariners a contender in the coming years.