The 2013 MLB season has featured a lot of shaky pitching performances thus far this season. Take a look at some of the worst arms in the bigs for your bankroll on the MLB odds.

There's nothing like having a great pitcher to back on a consistent basis on the MLB betting line. Here at Bang the Book, we're monitoring the most profitable starting pitchers that money could buy thus far on the season.

We're officially past the quarter pole of the season, and the All-Star Break will be here before you know it! This is an article you're definitely going to want to read, as it will go over all of the worst money pitchers on the MLB odds this season.

Cole Hamels may want to go ahead and write his name on the top of his list in permanent marker, because it doesn't look like the one time Phillies ace is going to be leaving any time soon. Hamels has been awful on the MLB betting lines near the halfway point of the 2013 MLB season, with a record of 2-13 -$1507. Surprisingly, Hamels has not been run early nearly the amount of times you might believe. Despite his abysmal record, Hamels has gone at least five innings in every start so far this season and has only given up more than four earned runs in an outing four times. It looks every bit that a black cat or two crossed his path and his record should be better, but until the hex is removed Hamels is a stay away pitcher.

If you want to talk about a pitcher that deserves his spot in this list, look no further than Joe Blanton. Blanton (2-11, -$1147) was seen as a reliable Mark Buehrle style innings eater when the Los Angeles Angels of Anaheim signed him to a 2 year/$15 million dollar deal this offseason, but the Angels have experienced a serious case of buyer's remorse with Blanton (and half the other players on their roster). The Angels gave Blanton a much needed day off last week to let him try to figure some things out, but is on the bump again this Tuesday.

Young Jeremy Hefner got some luck in upping his record to 2-11 -$905 this week thanks to a walk-off three-run home run from Kirk Nieuwenhuis. Hefner's peripherals aren't that bad this year and his main crime is pitching for a star crossed team like the Mets, but his walk rate is high compared to last year and extra base runners are not welcome additions to the basepaths.

The inexplicable season of Dan Haren continues, as the one-time Cy Young continues to post loss after loss against the MLB odds. Haren (4-10, -$731) has now lost on the baseball betting line in each of his last seven starts despite historically posting stats that sabermeticians long after in pitchers. With Haren, the simple fact is he is giving up way too many long balls. In his last 10 games, Haren has given up 13 dingers and it's been even worse recently with six home runs allowed in his last three starts. Haren continues to be a control guru and is stingy with his walks, but his strikeout rate is not once it once was and neither is Dan Haren.

With a 1.84 ERA, Dodgers' ace curveballer Clayton Kershaw isn't on many worst of lists, but has not been a money maker at all this year. Due to his elite status, the betting odds usually have him as a strong favorite so despite his team's 8-7 record on Kershaw starts this year, bettors are -$439 playing the boys in Dodger blue. Kershaw won his last start as a -163 favorite against Pittsburgh, but the Dodgers lost as -180 and -219 favorites at home against the Diamondbacks and Padres in his two starts before that although Kershaw pitched well. Losses as a huge favorite like those though are killers for your bankroll during baseball season and LA has now lost four games in which Kershaw was at least a -170 favorite.