There are a few different ways I could begin this post, and I can’t settle upon a best one, so you’re going to get them all. Prepare for a blitz of introductions. Jason Grilli was the fourth overall pick in the 1997 draft, and he was sent from the Giants to the Marlins in a trade for Livan Hernandez. He made his big-league debut for Florida in 2000, when he was 23 years old, and as a starter he worked 6.2 innings. In that one debut start, Grilli allowed more baserunners than he’s allowed so far in 2013 as the Pirates’ closer. As of Wednesday, he’s up to 16 saves.

Moving on. Every year, a handful of pitchers try to come back from existing completely off the radar. Most of them try to return and fail, but sometimes they succeed and make for improbable stories. A few years ago there was Ryan Vogelsong, and now there’s Scott Kazmir, who everyone previously assumed was never to be heard from again. Another guy trying to come back is Jeremy Bonderman, with the Mariners organization. He’s presently in Triple-A, and while he might not make it back to the majors, at least he knows a part of him is alive and well at the highest level. Because it was Bonderman who gave Jason Grilli some invaluable advice on developing and harnessing a slider.

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Apparently, a memo went out to every major media organization that covers Major League Baseball, telling them that they should write about the ever increasing rise of strikeouts in the sport. Back in March, Tyler Kepner wrote this article for the New York Times. Last Thursday, Scott Miller did a piece on the topic for CBS Sports. On Monday, Joe Lemire tackled it at Sports Illustrated. On Tuesday, Anthony Castrovince weighed in at MLB.com. Pretty much all of them hit on the same general points, with a continuing focus being on the change in approach among hitters. Each writer notes that the rise of statistical analysis has taken some of the stigma away from the strikeout, to the point that a hitter who strikes out 150 or 200 times per year is no longer considered to be an offensive black hole.

There’s almost certainly something to that idea, as we even published an article yesterday explaining why the Braves historic strikeout pace hasn’t really hurt their offensive production. It’s hard to argue that the move towards more analytical approaches to team building haven’t decreased the emphasis on strikeouts as a measure of offensive contribution, and it’s likely that the modern front offices care much less about strikeout totals for their hitters than those of the previous generation.

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If you knew Emilio Bonifacio’s younger brother was an outfield prospect in the Kansas City Royals’ farm system, you might assume the two are roughly similar. But Emilio — a speedy, switch-hitting, utility man for the Toronto Blue Jays — and Jorge have little in common, at least when it comes to their games. Jorge, the younger of the pair, is a burly right fielder with a strong arm. He was enjoying an excellent campaign as a 19-year-old in the Carolina League when he broke his hamate bone Tuesday during batting practice. Reports suggest he’ll miss six to eight weeks.

It’s difficult to say how the injury will affect his development. Even after returning to the field, the alleged power-sapping effects of a hamate break can linger. Whether appropriate or not, the injury will cast a shadow over the rest of his season.

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With J.J. Putz’s elbow hurting, the Diamondbacks have turned to Heath Bell in the closer’s role. Tuesday night against Atlanta, Heath Bell converted his fifth save in six last-inning save opportunities in impressive fashion: after the first baserunner reached on an error, Bell struck out Evan Gattis and Dan Uggla swinging before retiring Chris Johnson on a fly ball to center. Wednesday afternoon, Bell added another, as he worked another hitless and walkless inning, including a strikeout of Justin Upton.

Bell’s debut outing with Arizona looked like the beginning to another ugly season, as he allowed three runs on four hits (including two home runs) and managed just one out. Since then, Bell has been brilliant: over 18 appearances (17.2 innings), Bell hasn’t allowed a home run and has recorded 22 strikeouts against just two walks, good for a 3.06 ERA and a stunning 0.87 FIP. These two saves against Atlanta featured the drivers behind Bell’s success: impeccable fastball control, and the willing to go to it whenever he needs a strike.

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Table of Contents
Here’s the table of contents for today’s edition of the Daily Notes.

1. Most Improved Pitchers So Far, Per ZiPS
2. Today’s Notable Games (Including MLB.TV Free Game)
3. Today’s Complete Schedule

Most Improved Pitchers So Far, Per ZiPS
As the reader will know, we carry a tidy collection of projection systems here at the site — of which two now, Steamer and ZiPS, are updated daily with constantly changing rest-of-season and overall total projections. Together, the two systems provide important data for our new Standings tool. Another use is to see which players’ season performances to date have most altered their rest-of-season projections.

This week, in the Notes, we’re considering those hitters and pitchers whose projections have most improved. On Monday and Tuesday, we looked at the most improved hitters according to Steamer and ZiPS, respectively. Yesterday, we considered here the most improved pitchers according to Steamer.

Below are the most improved pitchers, except now according to ZiPS — where “most improved” is defined as “greatest decrease in projected ERA.”

Note: pitchers who (a) are projected to make starts in fewer than 50% of their remaining appearances or (b) are absent currently from a major-league roster have been omitted from consideration.

5. A.J. Burnett, RHP, Pittsburgh
ZiPS (Pre): 172.1 IP, 7.31 K/9, 3.24 BB/9, 0.89 HR/9, 4.07 ERA
ZiPS (RoS): 135.0 IP, 8.18 K/9, 3.22 BB/9, 0.82 HR/9, 3.85 ERA
Notes: Through nine starts now, Burnett has struck out 31.6% of opposing batters — a rate exceeded by only Yu Darvish (39.0%) and Max Scherzer (32.5%) among qualified starts. It’s true to say that the right-hander was better last season following his departure from New York. He was better, though, not because of an increased strikeout rate, but rather improved walk and ground-ball rates. What Burnett has done so far is unprecedented in his career: his previous high strikeout rate is a 25.5% mark he posted in 2007. The difference between his preseason and rest-of-season projected strikeout rates is a testament to what appears to be some kind of real improvement.

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Mariano Rivera’s 2013 victory lap prior to his planned retirement has been fairly remarkable thus far, returning from injury at 43 showing little sign of wear. He leads baseball with 16 saves (none blown), ranks first among AL relievers in WPA at 1.86, and has generally shown why he is a no doubt Hall of Famer to be.

There is not all that much to analyze with Rivera, his reliance on one pitch has long been notorious. Mariano’s late breaking cut fastball has gradually lost some velocity over the years, declining from the mid-90s to its current 90.2 MPH average speed but retaining its effectiveness.  I have provided a clip below comparing the movement of his cutter relative to a more typical fastball in a similar location.

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Episode 337
This edition of a FanGraphs Audio represents what’s known in the industry as a glorious simulcast effort — in this, with Baseball Prospectus’s own podcast, Effectively Wild, hosted by Ben Lindbergh and Sam Miller.

Don’t hesitate to direct pod-related correspondence to @cistulli on Twitter.

You can subscribe to the podcast via iTunes or other feeder things.

Audio after the jump. (Approximately 58 min play time.)

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Ben and Sam team up for a simulpodcast with Carson Cistulli of FanGraphs and FanGraphs Audio to discuss whether the Yankees have been lucky, the best way to watch baseball, and the value of old scouting reports.

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The Astros have the worst team strikeout rate in the history of baseball. It’s not even particularly close, as these things go. The Astros have struck out in 26.8% of their plate appearances. The 2010 Diamondbacks struck out in 24.7% of their plate appearances. That’s a gap of more than two percentage points, in a rate that usually fluctuates between 15-25% or so. That’s terrible, and the only consolation is that the Astros were projected to be terrible so no one really cares.

Then right behind the 2010 Diamondbacks are this year’s Braves, at 24.5%. So, this year’s Braves have the third-worst team strikeout rate in the history of baseball. Between third and fourth there’s a gap of another 1.6 percentage points. The Braves, obviously, have the second-worst team strikeout rate this season. Just glancing at their current box score, they’ve struck out six times in four innings against Ian Kennedy on Wednesday. They’re going to strike out more before this game is through. Probably. I guess I can’t be certain.

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