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.

Report: Momentum in talks between Mariners, Jon Jay

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MLB.com’s Mark Feinsand reports that there is some momentum in talks between the Mariners and free agent outfielder Jon Jay.

Jay, 32, hit .296/.374/.375 in 433 plate appearances with the Cubs last season, which is adequate. He’s heralded more for his defense and his ability to play all three outfield spots.

The Mariners are losing center fielder Jarrod Dyson to free agency and likely don’t want to rely on Guillermo Heredia next season, hence the interest in Jay. The free agent class for center fielders is otherwise relatively weak.