The cornerstone of the Washington Nationals’ starting rotation will miss the rest of the 2009 season and at least the first half of the 2010 season.

Bet the 2009 World Series Odds

Twenty-three old Jordan Zimmermann will have reconstructive elbow surgery on Wednesday after Dr. Lewis Yocum, an excerpt in Tommy John surgery, recommended it for the right-hander.

This is a massive blow to the Nationals, who lose one of their best young players. The club was hoping to build on Zimmermann’s potential, but will now have to cope with losing their ace for the next 12-18 months.

Zimmermann was 3-5 with a 4.63 ERA in 16 starts this year.

Oddsmakers from online sports book SBGGLOBAL currently list the Nationals as massive 5000/1 long shots to win the 2009 World Series and 2500/1 to win the National League Pennant.

Bet the 2009 World Series Odds

Posted: 8/12/09 11:10PM ET