Boston's Former Cardinals Crash and Burn

Joe Kelly will try to figure it out in the minors (Yahoo Sports)

With Joe Kelly's demotion to Triple-A Pawtucket today, the Red Sox have officially lost last summer's trade with the St. Louis Cardinals--the one that sent John Lackey packing to St. Louis in return for Joe Kelly and Allen Craig, neither of whom are currently on the big league roster..

In fact, I think it might be the worst trade Ben Cherington has ever made. Kelly and Craig have both been massive busts in Boston, while Lackey has continued to be an effective starter for the Cards. Kelly has not developed into a viable starting pitcher, much less the Cy Young winner he predicted he'd be. With a 5.67 ERA and 1.50 WHIP, he's been one of the worst starting pitchers in baseball this year. At this point, his best bet is to take his heater to the bullpen, where he may enjoy a renaissance a la Andrew Miller.

As for Craig, he has yet to rediscover the stroke that made him a .300 hitter and one of the league's best RBI men. Not even Fenway Park could help restore the former All-Star's bat, as he's hit a meager .130/.235/.192 since joining the Red Sox. His age, injury history, non-existent production, and costly price tag (he'll earn $11 million next year) makes him all but untradeable.

Meanwhile, Lackey has continued to thrive in St. Louis. He faded down the stretch last year but has bounced back strong this year, posting a 3.41 ERA, 1.22 WHIP, and 3.14 K/BB ratio. He's been one of the most reliable starters for the first-place Cardinals, leading the staff in innings pitched and helping pick up the slack in Adam Wainwright's absence. Even at 36, he shows no signs of slowing down.

At the time, trading a veteran starter in his mid-30s for a hard-throwing hurler in his mid-20s made plenty of sense, but taking on Craig's costly contract and expecting him to bounce back proved to be too much of a gamble. Boston really could have used Lackey in its rotation this year, and had absolutely no need for Craig given its already-crowded outfield situation when he arrived. Now it looks like the Sox are stuck with him, unless they can convince somebody that regular playing time will rejuvenate the soon-to-be 31 year-old's bat.

I still think Kelly has a future as a shut-down reliever, but that's not as valuable as a reliable starting pitcher, especially given the struggles of Boston's rotation this year. This trade is just one of many reasons why the Red Sox have underperformed this year, but it's now clear that they'd be better off had Cherington never done this deal.

Can Craig Bounce Back?

Once an elite hitter, Craig has struggled at the plate this year (CNN)

Mere hours after trading Jon Lester and Jonny Gomes to Oakland for Yoenis Cespedes on deadline day, the Red Sox dealt their next-best starting pitcher--John Lackey--to St. Louis for another outfield bat (Allen Craig) and starting pitcher Joe Kelly, both of whom competed against Boston in last fall's World Series.

A ground ball pitcher who doesn't strike anyone out, Kelly is a back of the rotation starter at best. Boston will need him to fill in now that 80 percent of its Opening Day rotation is gone, but once the young guns are ready he'll likely be ousted to the bullpen. Though not a difference maker by any means, Kelly is only 26 and won't reach free agency until 2019. That makes him an attractive trade chip, if not someone worth keeping around.

Craig, an All-Star last year and hard-hitting outfielder until recently, would seem to be the bigger get. He was a terrific hitter in the three years before this one, batting over .300 every year, reaching base more than 36 percent of the time and slugging .500. His 139 wRC+ during that span was the eighth-highest among outfielders, sixth after excluding American Leaguers Mike Trout and Jose Bautista. He twice received MVP consideration while averaging 40 doubles, 23 home runs, and 114 RBI per 162 games from 2011 through 2013.

But Craig can't stay healthy. He's never played 135 games in a season, let alone all 162. He's endured several lower body injuries over the years, including a fractured knee in 2011 and foot last injury year that combined with age have limited his mobility and apparently his power. His fly ball rate and home run per fly ball rate are both at career lows, and he's pounding the ball into the ground more than half the time he puts the ball into play--a horrible strategy for someone with no foot speed.

So unfortunately for Boston, Craig appears to be a player in decline. His slugging, OPS and ISO have fallen every year since 2011, a trend that has coincided with increased playing time as well as age, thus suggesting that he's unable to . His walk rate has declined the last two years including this one, and his strikeout rate has gone the other way. This year's been a disaster for Craig, who didn't get his average over .200 until the last day of April, went homerless in June and recorded just six hits in 16 July games.

Craig's been healthy this year and had a full offseason to recover from his ankle sprain, so there's really no excuse for his poor performance. His BABiP has plunged more than 80 points from last year and 50 points below his career mark, which suggests some bad luck, but that's also due to his line drive rate falling from almost 27 percent last year to below 20 percent this year. Craig''s just not hitting the ball with the same authority, and the results have been Billy Butler and Derek Jeter-esque.

Craig, who signed an extension with the Cardinals before last season, will be under team control through 2017 and has an option for 2018. But if his best days truly are behind him and he's going to stay the same or get worse, then he'll be horribly overpaid as his salary escalates over the next few years, especially in 2016-2017 when he's set to make $20 million. And he can forget about his 2018 player option that would net him an additional $13 million.

Could Craig rebound in Boston? It's not out of the question. Barely 30 years old, he's not far removed from his prime and could easily bounce back, especially now that he's playing half his games at Fenway Park. ZiPS and Steamer both project him to finish the season strong, with ZiPS predicting him to bat .278/.330/.440 the rest of the way and Steamer even more optimistic at .295/.348/.470. The offenseively challenged Red Sox are hoping he can turn it around and get back to his old ways, which would give them another run-producer and lengthen the lineup.

But even if Craig does there's really no place for him. He can man left field for now with Yoenis Cespedes covering for Shane Victorino in right, but that's about the only place he can play. His range is too limited to patrol Fenway's expansive right field and the Red Sox already have expensive and productive regulars at DH and first base in David Ortiz and Mike Napoli. Once Victorino comes back Cespedes would likely move to left to accomodate him, though it's possible the Flyin' Hawaiian goes back to center given Jackie Bradley, Jr.'s offensive woes.

Craig could be the odd man out soon, and needs to hit to carve out out playing time for himself. These next two months are essentially an audition for him. If he can get his swing right, John Farrell will find a place in his lineup card for a bat with .300-20-100 potential. But the Red Sox have made it clear that they want to give more playing time to their young stars, which means they won't have much patience for a washed up corner outfielder/first baseman on the wrong side of 30. Should Craig continue to struggle, expect him to be somewhere else come Opening Day.