Matt Cain hasn’t been himself since throwing perfect game

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He hasn’t reached Philip Humber territory in terms of struggling after throwing a perfect game, but Matt Cain has a 4.40 ERA since making history on June 14 and the Giants have lost six of his nine starts during that time.

Cain has a strong 46/16 K/BB ratio in 57 innings over that nine-start stretch, but he’s served up 10 homers in 243 plate appearances after allowing just seven homers in 364 plate appearances through the perfect game. And last season Cain allowed a grand total of nine homers in 907 plate appearances.

Andrew Baggarly of CSNBayArea.com notes that Cardinals hitters fouled off 37 pitches in beating Cain last night, including 13 with two strikes. And afterward Cain admitted that “putting away guys better” has been a problem.

And then there’s this tidbit from Baggarly:

Those who use advanced metrics have been forever fascinated by his suppressed home run/fly ball ratio, sometimes calling it unexplainable or unsustainable but certainly calling it an outlier. Last year, just 2.9 percent of Cain’s fly balls were home runs; the NL average was 7.9 percent. It was the most extreme example in what’s been a career trend. … This season, perhaps he’s deviating to the norm. His home run/fly ball ratio is 7.7 percent, nestled right up against the NL average of 7.9 percent.

Cain becoming mortal in terms of allowing homers is definitely interesting, but it’s also worth noting that even with that career-worst homer-to-fly ball rate overall this season his ERA (3.01) is better than his xFIP (3.62) for the eighth consecutive year.

Joe Musgrove shut down with ab discomfort

Joe Musgrove
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Pirates right-hander Joe Musgrove is done for the year after suffering an abdominal wall muscle strain and stress reaction in his pelvic bone. While he isn’t expected to undergo surgery or miss additional time in 2019, he’s been prescribed six weeks of rest before resuming any baseball-related activities.

Musgrove, 25, finished out his third year in Pittsburgh with a 6-9 record in 19 starts, backed by a 4.06 ERA, 1.8 BB/9, and 7.8 SO/9. Despite logging a career-high 115 1/3 innings at the major league level, he’s also been dogged by a string of injuries, from the shoulder strain that robbed him of eight weeks at the start of the season to an index finger infection that kept him sidelined for a minimum 10-day stay on the disabled list in June.

While he works his way back up to full strength yet again, rookie right-hander Nick Kingham is expected to cover for him and will make a spot start during the Pirates’ series finale against the Brewers on Sunday. The 26-year-old righty hasn’t started a single game for the team since August 1, and currently carries a 4.69 ERA, 2.7 BB/9, and 8.1 SO/9 over 71 innings out of the rotation and bullpen.