jump to navigation

Holy Cow, More On Ruben Tejada’s OBP July 29, 2014

Posted by tomflesher in Baseball.
Tags: ,
add a comment

Last night, Ruben Tejada once again hit in the 8th batting order position. In four plate appearances, he walked once, in the bottom 8th; there’s been some discussion that Tejada’s OBP is inflated by intentional walks being thrown to get to the pitcher’s spot, though that definitely wasn’t the case here because the next player was lefty specialist Josh Edgin. As expected, Edgin was lifted for pinch hitter Bobby Abreu, who grounded into a double play. (Hmm. Maybe that was the intent. But Abreu only has 3 GIDPs on 140 plate appearances this year.)

Tejada’s stats by batting order position show some patterns. As an eighth-position hitter, Tejada has 198 plate appearances, 34 hits, 2 home runs, 32 walks, and 31 strikeouts, for a .213/.354/.288 line. In other order positions, he has 128 plate appearances, 27 hits, 0 homers, 14 walks, and 30 strikeouts, giving him a .245/.320/.275 line. Let’s assume, for the moment, that that .320 OBP line is Ruben’s true mark. That means his mark at the 8th inning should be, with 95% probability, somwhere in the range of .320 +/- .066, or somewhere between .254 and .388. Obviously, .354 is in that range. In fact, the .034 difference is about 1 standard error out, meaning there’s about a 70% chance of achieving that mark by chance alone.

In other words, it looks like there’s a statistically significant effect for Ruben batting in the 8th position. If we remove Ruben’s 9 intentional walks received in the 8th position and replace them with 2 hits and 7 outs, we’re left with a truly terrible .297 OBP, which is surprisingly even worse than his OBP while batting elsewhere, and one within one standard deviation of his .320 mark. That is, of course, a worst case scenario, assuming he wouldn’t walk at all in those 9 appearances. If he walked 3 out of 9 times, as his other stats would indicate, that would put him at a still not great .313 OBP.

Advertisements

Tejada leads the team in OBP April 9, 2014

Posted by tomflesher in Baseball.
Tags: , , , ,
add a comment

Moneyball was an influential book for two reasons. First, it described the process by which a GM can attempt to min-max a winning team every year. That’s interesting. Second, it showed a lot of the fans – not the front offices, who had already corrected the inefficiency by the time the book was published, but the fans – about the importance of walking and generally getting on base.

I never thought last year that I’d be typing this sentence, but Ruben Tejada is leading the Mets in OBP for qualified players (3.1 plate appearances per team game). Two players outstrip Tejada’s .400 mark – professional pinch hitter Ike Davis and starter Jonathan Niese, each at .500 – but neither has enough plate appearances to be on pace to qualify for rate stats. In retrospect, it shouldn’t be surprising that Tejada’s eye is developing. As a 21-year-old in 2011, Tejada had an OBP of .360 in 376 plate appearances over 96 games, walking 35 times – that’s one walk every 10 3/4 plate appearances – and striking out 50, for a K/BB ratio of 1.42. Last year, Tejada went pear-shaped, walking only one out of every 15 plate appearances, but he still only struck out 1.6 times for every walk he took – which is hardly the mark of an inconsistent hitter. Last year, it looks like Tejada just got really unlucky, batting .228 on balls in play versus a team average of .291. This year, he’s swung all the way to the other side of the pendulum – so far, his BAbip is .400 versus a team average of .241.

Tejada may never be a brilliant shortstop like Jose Reyes was, but his batting is gaining in consistency.