Bill James sent an e-mail to a few sabermetric friends this afternoon praising Coco Crisp. Seth Mnookin posted here. The main quote from James:

"It seems to me that the BIGGEST factor in our team's performance over the last week or so has been that Coco has been just unbelievable in center field...he's just catching EVERYTHING that looks like it might be trouble. There's been no gap in right center, no gap in left center, nothing getting over his head and nothing has been landing in front of him."

Seth gives an example from Friday night's game. I was able to obtain data on Crisp's putouts, and since April 23rd, Coco started seven games, collecting 34 putouts or about five a game. In his previous 15 starts, Coco recorded 41 putouts, or less than three per game. So over the last couple of weeks, Crisp is up about two putouts per game. There's not a lot of context here. I don't know if more balls are being hit in his general area. But I'm trying to get a handle on the degree of difficulty of the catches, and I'll post when I have something on that.

Update: Here's a chart of Crisp's putouts this season. Second base is at 180 degrees. (Click for a larger image.)

As you can see, he's catching balls close and far, and he's covering thirty degrees of the field.