Kendrick is comfortable hitting lower in the order.
Callaspo had a lower OBP last year than 12 of the 19 qualifying 3rd basemen. His slugging was the lowest and his OPS was second to last. His average was 15th. He scored the third fewest runs, 17th in 2B, and was tied for 16th of 19 in HR. The guy has not been what everyone seems to think he is, an OBP machine who plays good defense. His 53 walks are a low total, granted this team doesn't walk alot, but he's not putting up the 100 walks and 30-40 HR that justify a low average. His career shows plenty of evidence to support that 2011 was an outlier. He's more likely to hit .250/.330/.360 again than .280/.365/.375.
Callaspo actually does hit well against lefties, so I'd be fine with him in the #2 spot, but I don't even think he should play against right handers. His defense is an asset yes, but not if the team has 4 extreme fly ball starters.
I like Aybar in the spot due to his .290 average, which is 4% more hits than Callaspo, and while he will likely walk 20 times less, the OBP will then be about the same. Aybar will get .50 points higher slugging, which is more doubles, more triples, and similar home run totals. Aybar also doesn't show a dramatic split against lefties or righties and killed the ball in the #2 spot last year. Seeing more fastballs isn't a huge positive for a really patient hitter like Callaspo but for a guy trying to hit the ball the way Aybar does, that's a positive.
Yet I feel that the guy for the long run in the #2 spot is Bourjos. He is about to be 26, with one successful year starting full time and two other years where he didn't hit well. Okay, but his speed is a bigger asset than most believe. He's been great this spring, posting a .545 On Base Percentage. Yes it's only spring and yes it's only 11 PA, but 4 hits, 3 walks, is pretty good to start.
Bourjos' good year in 2011, he has BABIP's of .415, .243, .411, .364, .333, and .290 in each of the six months. I do not expect him to have a .400 BABIP, but averaging a .360 BABIP would be great.
What that would mean is that he gets a hit 36% of the time when the ball is put in play. Should he walk 50 times and hit 15 HR to go along with 100 strikeouts that would result in a line like: 650 PA, 600 AB, 174 hits, .290 average. His OBP then would be around that same .360, assuming he gets hit by a pitch as often. Plus he'll steal 30+ bases, And if he serves up a similar slugging percentage, he'd end up with 30 2B, 10-15 3B and 10-15 HR. All of these are better numbers than Callaspo has shown in his career. And to top it off, Bourjos's defense will really matter.
It should be Bourjos and Aybar to start the year, with Bourjos being the guy there down the stretch.
Or as Lyle Spencer put up, Trout in the #2 spot and Bourjos leading off. Not traditional, but to face 2-3-4-5 MT, AP, JH, and MT…that's a murderers row.