Searching for Madison Bumgarner's fastball

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Usually when a stud pitching prospect gets called up from Double-A just a month after his 20th birthday and throws 5.1 innings of two-run ball while making a spot start in place of the reigning Cy Young winner it’s cause for excitement, but instead Madison Bumgarner’s debut last night has people wondering what happened to his fastball.
Bumgarner has been an elite prospect since the Giants picked him 10th overall in the 2007 draft and his numbers in the minors are the stuff of video games set to “beginner.” He went 27-5 with a 1.65 ERA and 256/55 K/BB ratio in 273 innings prior to being called up, including 9-1 with a 1.93 ERA at Double-A this season.
Along with the first-round pedigree and insanely good numbers Bumgarner also comes with glowing scouting reports like this one from Baseball America: “There may not be a left-hander with a better fastball than Bumgarner’s. He hits 97 mph with minimal effort, consistently pitches at 93-94 and hitters have trouble picking up his heater from his high three-quarters delivery.”
Everyone who tuned into the Giants-Padres game last night expecting to see the 20-year-old phenom with a sub-2.00 ERA and mid-90s fastball instead saw a guy who topped out in the low-90s and worked mostly in the high-80s. There are reports that Bumgarner’s velocity has been dropping throughout the season and his declining strikeout rates back that up even if his sparkling ERA doesn’t.
Bumgarner struck out 187 batters in 166 innings between rookie-ball and Single-A, which works out to an outstanding 10.1 strikeouts per nine innings. However, after moving up to Double-A he managed only 69 strikeouts in 107 innings, which equals just 5.8 per nine innings. He’s also seen his walk rate nearly double while serving up significantly more homers, including a pair of long balls against the Padres last night.
Rob Neyer of ESPN wonders if the Giants “have backed Bumgarner off his big fastball in favor of better control of his breaking ball and more consistency with his changeup” because “it’s hard to think a guy with a 1.85 ERA is hurt.” That makes sense to me, but it’s also possible that a pitcher who logged nearly 300 pro innings before turning 20 is simply fatigued and showing decreased velocity without actually being hurt.
Depending on Tim Lincecum’s back injury, we may have to wait until next season to find out.

The Rockies are promoting outfield prospect David Dahl

SAN DIEGO, CA - JULY 10:  David Dahl of the U.S. Team looks on prior to the SiriusXM All-Star Futures Game at PETCO Park on July 10, 2016 in San Diego, California.  (Photo by Harry How/Getty Images)
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In a wave of prospect advancement news on Sunday, the Rockies have joined the fray. The Astros are calling up Alex Bregman. The Diamondbacks are calling up Braden Shipley. And the Rockies will call up outfield prospect David Dahl on Monday, Nick Groke of The Denver Post reports. The Rockies are expected to designate outfielder Brandon Barnes for assignment to create roster space.

Dahl, 22, was selected by the Rockies in the first round — 10th overall — in the 2012 draft. He started the season at Double-A, batting .278/.367/.500 with 13 home runs, 45 RBI, 53 runs scored, and 16 stolen bases in 322 plate appearances. He earned a promotion to Triple-A Albuquerque earlier this month. In 16 games there, Dahl has hit an outstanding .484/.529/.887 with five homers, 16 RBI, and 17 runs scored in 68 plate appearances.

Dahl is considered the Rockies’ second-best prospect and #40 overall in baseball according to MLB Pipeline. He got some camera time during the 2016 Futures Game two weeks ago, going 0-for-2.

David Robertson and adventures with the win statistic

CHICAGO, IL - JUNE 26:  David Robertson #30 of the Chicago White Sox pitches in the 9th inning for a save against the Toronto Blue Jays at U.S. Cellular Field on June 26, 2016 in Chicago, Illinois. The White Sox defeated the Blue Jays 5-2.  (Photo by Jonathan Daniel/Getty Images)
Jonathan Daniel/Getty Images
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David Robertson got the win in both White Sox victories today, a double-header versus the Tigers. In the first game, he got the final out of the eighth inning and pitched a scoreless ninth before the White Sox walked off on an Adam Eaton RBI single.

It was the second game that made things interesting. Robertson took the mound at the start of the ninth inning staked to a 4-1 lead. He’d fork up a leadoff home run to Nick Castellanos. Then, after getting two outs, served up another solo shot to Tyler Collins followed by a game-tying Jarrod Saltalamacchia dinger. Robertson would get out of the inning without any further damage.

In the bottom of the ninth, Melky Cabrera sent the White Sox home winners again, drilling a walk-off RBI single. That gave Robertson the win, his second of the afternoon. As Baseball Tonight notes on Twitter, Robertson is the first player in the last 100 years to give up three home runs in an inning or fewer and still wind up with the victory.

Robertson has had a rough go of it since the All-Star break. He yielded four runs in his first appearance back on July 18. On the season, he’s saved 23 games in 27 appearances with a 4.46 ERA and a 50/21 K/BB ratio in 40 2/3 innings.