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# September 18 game chat

9/18/2011

#### Pirates at Dodgers, 1:10 p.m.

• Dee Gordon, SS

• Jamey Carroll, 2B

• Matt Kemp, CF

• Juan Rivera, LF

• James Loney, 1B

• Aaron Miles, 3B

• Jerry Sands, RF

• A.J. Ellis, C

"How a line drive percentage boost has helped Matt Kemp," from Mark A. Simon of ESPN Stats and Information:

Matt Kemp hit line drives on 16 percent of the balls he put in play in 2010. He’s upped that rate to 22 percent in 2011 (statistics through Wednesday's games).

How much of a difference does a six percentage point jump make? Let’s explore:

In 2010, Matt Kemp had 50 hits on his 71 line drives (50-for-69, .725 BA, two sacrifice fly)

In 2011, through Wednesday, he has 72 hits on 91 line drives (72-for-90, .800 BA, 1 sacrifice fly)

Hypothetically, let’s say that Kemp was hitting line drives at a similar rate to last season and that he was getting hits on them at a similar rate to last season.

In our new situation, that would give him 48 hits on 66 line drives

That would give him 24 fewer hits than he has right now.

To account for those 25 balls he hit that we’re no longer considering line drives (91 minus 66), Let’s presume he still hit those balls- but hit flies and grounders.

Kemp has hit fly balls and ground balls this season at nearly the same rate. So let’s give him 13 fly balls and 12 ground balls. And his hit rates on those are such that it should add about 8 hits to his ledger.

In all, that would mean that the increased line drive rate and line drive performance has been worth about 16 hits to Kemp’s ledger.

If we took those 16 hits and turned them into outs, it would chop 30 points off Matt Kemp’s batting average.

He’d be hitting .286 instead of .316. Still pretty good, but would perception be any different, given that he’s still a 30 HR-30 SB player?

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On Thursday night, I read a review in the New Yorker (abstracted here and also discussed here) of a new novel, "The Art of Fielding" by Chad Harbach.

In Friday's mail was a copy of the book, sent to me by my father. Nice.