A few weeks ago, I stole RotoGraphs contributor Joe Douglas’ idea (with his permission) as I pointed out that the “generic” Tommy Pham had provided surprisingly similar offensive production in his career to the “brand name” Michael Conforto. It was a fun exercise, and one that we’re going to do again today.

To set the stage, we’re going to talk about two rookies with outfield eligibility. One receives plenty of attention and hype; the other, not so much. Mr. Generic debuted in 2016 but is still considered a rookie this season, while Mr. Brand Name debuted in 2017. Here’s how they’ve fared so far this year:

The first thing that jumps out is the nearly 100-point difference in BABIP, and the fact that Mr. Generic’s BABIP is perhaps unsustainably high. More about that in a minute.

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A special Father’s Day edition of the Bullpen Report, with a tip of the hat to all the baseball-loving dads out there. It was a busy Sunday for bullpen activity across the major leagues…

Mark Melancon entered the ninth with a two-run lead and blew his fourth save of the season in 14 chances. Melancon missed time earlier this year with a pronator strain in his right forearm, and apparently it’s a lingering issue. The loss dropped the Giants to 26-45 and 19.5 games back in the National League West. Since the Giants are probably just about ready to throw in the towel on 2017, Melancon will probably land on the disabled list before too long if he really is injured. He’s already blown as many saves and allowed as many home runs in 17.2 innings this year as he did in 71.1 innings last year. Hunter Strickland is probably next in line for saves in San Francisco should Melancon miss time, with Derek Law also a possibility, but it’s worth noting that Major League Baseball still hasn’t ruled on Strickland’s suspension appeal for his involvement in the incident with Bryce Harper late last month. A ruling (and subsequent suspension) should be forthcoming for Strickland.

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I despise the use of small sample sizes, but pitchers change so frequently that it’s not so silly after all to evaluate shifts in underlying skills over a relatively small number of starts. So as I do every once in a while, I peruse the SwStk% leaderboard over the last 30 days. Let’s discuss some of the interesting names on there, shall we?

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In my introductory article on streaky hitters, I used Anthony Rendon as a narrative hook. I wish I had waited a couple of weeks so I could have used Scooter Gennett instead. Gennett hadn’t hit a home run since April 11 before he smashed four on Tuesday, and based on my criteria, Gennett has now officially snapped the cold streak he had been on since May 12 which featured just one hit over his most recent seven games. More to the point, now that I’ve defined what I consider a streaky hitter to be, I wanted to look at some multi-year trends to see if I could identify certain hitters as consistently streaky or not streaky and hopefully pinpoint some specific skills that lead to those tendencies.

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There are 10 qualified starting pitchers with an xFIP under 2.80 in the last 30 days.

Among them are predictable names like Chris Archer (2.52), Clayton Kershaw (2.53), Chris Sale (2.64), Johnny Cueto (2.74), and Zack Greinke (2.76).

The other five aren’t as well known, and therefore, they are more intriguing.

Being in the top 10 xFIP leaderboard for a month is not necessarily a huge accomplishment. However, xFIP has one of the highest correlations with future ERA of all pitching metrics, so it’s among the most relevant numbers to examine when searching for potential breakouts or analyzing the legitimacy of poor or plus performance.

Below is a table sorted by the top 10 qualified starting pitchers in xFIP over the last 30 days*, with the best statistic in each category highlighted in yellow, and the worst statistic in each category highlighted in red: Read the rest of this entry »

Last week, I began my examination of in-season BABIP with a look at how the league was utilizing the defensive shift and individual players were being shifted versus last season. It was a precursor to identifying and discussing where hitters currently stand with regards to my new xBABIP equation, which was developed earlier in the year and accounts for defensive shifts. So let’s dive into the hitters who have overachieved the most, meaning their BABIP marks are significantly higher than their xBABIPs.

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Plenty of compelling bullpen activity around the major leagues on a busy Sunday afternoon…

Koda Glover was brought into an existing eighth inning with a 6-4 lead, two outs, and a runner on second. He retired Jed Lowrie to end the inning, then the Nationals proceeded to score five runs in a long top of the ninth. Despite the 11-4 lead and lengthy half inning, Glover came back out for the bottom of the ninth, and he allowed four straight singles and a walk before being replaced by Shawn Kelley with the bases loaded, no outs, and two runs already in. After retiring Rajai Davis on a shallow fly ball, Kelley served up a grand slam to Matt Joyce that made it 11-10 Nationals. Kelley retired the next two batters he faced to secure the victory. When it was all said and done, Glover was charged with five earned runs in 0.1 innings, and Kelley was charged with one earned run in one inning.

Despite today’s craziness, Glover has brought much-needed calm to the Nationals bullpen as of late. He has four saves since May 24, and before today, he had recorded saves in four straight appearances. This was the first time Glover has allowed a run in 10 appearances since he landed on the disabled list with a left hip impingement in late April. Even with today’s meltdown, Glover has a 1.74 FIP and 3.21 xFIP on the season. A 3.21 xFIP is hardly something to scoff at, and it seems as if the Nationals have finally found their ninth-inning man (although it remains probable they’ll target bullpen help before the trading deadline). The home run Kelley gave up was the seventh he’s allowed in 15 innings this season, and overall, he has a 5.40 ERA and 5.37 xFIP. As such, he has been surpassed on the grid by Matt Albers, who boasts a strong 1.29 ERA and 3.14 xFIP in 21 innings this year. Read the rest of this entry »

As a RotoGraphs reader, I’ve always enjoyed Joe Douglas’s “Buying Generic” series. In past articles, he has compellingly compared “generic” players like Ryon Healy, Logan Forsythe, and Justin Bour to “brand name” ones like Jake Lamb, Jason Kipnis, and Carlos Santana.

The fantasy relevance of the exercise is obvious: Buying generic allows owners to acquire players cheaply and with relative ease, instead of paying a premium (whether in a trade or in a draft or auction) for a brand-name player.

For today’s comparison, we’re going to analyze two players who have played in parts of the last three seasons, but neither has eclipsed 350 plate appearances in any one year. Both appear on their way to full-time jobs in 2017 and beyond.

Here’s how Mr. Generic and Mr. Brand Name have fared since 2015:

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Plenty of bullpen-related news and notes on a busy Sunday afternoon. A few noteworthy items from Saturday are mixed in as well…

• With a 5-3 lead against the Nationals, Brad Hand struck out one in a scoreless eighth, and Brandon Maurer retired Trea Turner, Daniel Murphy, and Anthony Rendon consecutively in the ninth to secure his sixth save of the season. Maurer was temporarily removed from the close’s role, during which time Hand filled in respectably, but at least for today things went back to normal. Although Maurer has a 6.52 ERA on the season, his peripherals suggest he’s been much better than that. He has an excellent 2.59 FIP and 2.66 xFIP on the season thanks to the fact that he’s only allowed four walks and two home runs in 20 innings this year, to go along with 23 strikeouts. While Hand is an excellent reliever in his own right, Maurer still appears to hold the edge in save opportunities, at least for now. If Maurer falters, however, it appears that the Padres are willing to pivot to Hand at a moment’s notice. As such, Hand worth targeting for those speculative on saves, and he’s certainly worth owning in holds leagues, as he’s on of the better set-up men in baseball.

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I wanted to take a break from my Effective Velocity research, and so, in honor of Anthony Rendon, I decided to take a look at streaky hitters. Before this season, I did not have a perception of Rendon as streaky. But so far this season, he has produced 5 of his 7 total home runs, 7 of his 21 total runs, and 15 of his 28 total RBI in just two games. That’s insane. It may not mean anything in this case; however, it makes intuitive sense that some hitters would be more consistent than others. And beyond even the desire to roster consistent hitters over streaky hitters in weekly formats, I think it is at least worth exploring whether it is possible to identify hot and cold streaks as they are happening and make start-and-sit decisions with them in mind.

The first step toward that goal is defining what hot and cold streaks are. Rendon probably isn’t the best example of that. In general, I think of a hot hitter as one who produces well above his typical level of production for an extended period. As a starting point, I decided to look at players who produced a wOBA over seven consecutive games or more that was either 110 points above their seasonal line (hot) or 110 points below their seasonal line (cold). That 110-point threshold is fairly random, but it is based on the difference in the glossary markers for an excellent and awful player over a full season.

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