Chapman is awesome and everything, but are the radar guns juiced?

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We’ve all been impressed with the Aroldis Chapman show recently. That 103.9 reading the other night was boffo, and it actually made that 105 reading from Louisville — which I had doubted but am maybe coming around to believe — seem more plausible. Baseball Prospectus’ Kevin Goldstein has a great point, though: we should be skeptical of the guns:

Radar guns are sensitive
pieces of equipment that need to be consistently calibrated, and that could be
the extent of the issue, but at the same time, there’s been so much good press
generated by Chapman’s velocity since the 105-mph reading, that conspiracy
theorists are starting to ask questions. Now that MLB doesn’t have juiced balls
or players anymore, are the radar guns juiced?

Goldstein’s comments aren’t mere contrarianism, mind you. His skepticism comes from the fact that a handful of other fireballers — including Neftali Feliz and Chris Sale — have recently had unprecedentedly hot readings as well and maybe — just maybe — some funny business is afoot.

Good catch by Kevin. For what it’s worth, I would have no trouble whatsoever featuring the people behind the ballpark radar guns putting their thumb on the scale, so to speak, in order to spark a few more oohs and ahhs from the crowd. And maybe — just maybe — a few extra ticket sales.

Dave Roberts: It “doesn’t make sense” for Scott Kazmir to start year in Dodgers’ rotation

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Scott Kazmir won’t begin the regular season in the Dodgers’ starting rotation. Manager Dave Roberts said after Kazmir’s Cactus League outing on Sunday that it “doesn’t make sense” for the ailing Kazmir to break camp in the rotation, Andy McCullough of the Los Angeles Times reports. The lefty will instead rehab some more and join the rotation at a later time.

Kazmir has been battling a hip issue which has caused his mechanics to suffer. He was clocked in the low 80’s 10 days ago and wasn’t much better on Sunday afternoon.

Last season with the Dodgers, Kazmir posted a 4.56 ERA with a 134/52 K/BB ratio in 136 1/3 innings, his worst numbers since returning to the majors in 2013.

Robert Gsellman wins spot in Mets’ rotation

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Jon Heyman of FanRag Sports reports that Robert Gsellman has won the No. 4 spot in the Mets’ starting rotation. He adds that the Mets are likely to play things cautiously with lefty Steven Matz. The fifth and final rotation spot will go to either Zack Wheeler or Seth Lugo.

Gsellman, 23, has had a great spring. The right-hander has allowed three earned runs on 15 hits and four walks with nine strikeouts in 17 1/3 innings. That is on the heels of seven solid starts at the end of the 2016 season during which he yielded 12 earned runs on 40 hits and 12 walks with 40 strikeouts in 41 innings.

Matz, 25, is dealing with irritation in his left elbow. He had surgery in October to remove a bone spur and was a Tommy John patient several years ago. It sounds like the Mets are leaning towards having him start the season on the disabled list.

Wheeler, 26, isn’t having a great spring. He’s surrendered seven runs in 7 1/3 innings. Lugo has given up three earned runs in seven spring innings and also looked solid in the World Baseball Classic although he took the loss in the final against the United States.