Not all 30-30 seasons are created equal

For most of baseball history hitting 30 homers and stealing 30 bases in the same season was a pretty big deal.
From the beginning of time through 1982 the only players in the 30-30 club were Ken Williams (the 1920s outfielder, not the current White Sox general manager), Hank Aaron, Willie Mays, Bobby Bonds, and Tommy Harper.
Beginning in 1983 the club started to expand rapidly, adding Dale Murphy, Darryl Strawberry, Eric Davis, Howard Johnson, Joe Carter, Jose Canseco, Barry Bonds, Ron Gant, and Sammy Sosa during the next decade.
And since the players returned from their strike in 1995, at least one player has joined the 30-30 club every year for an influx of 21 new members and 31 total 30-30 campaigns in 15 seasons.
Rangers second baseman Ian Kinsler became the club’s newest member Friday with the 54th 30-30 season in baseball history, and it’s also one of the least impressive 30-30 campaigns. Kinsler’s current .250 batting average would be the lowest by any 30-30 player, his .323 on-base percentage would be the fourth-lowest, and his .480 slugging percentage would be the ninth-lowest.
Here are the best and worst adjusted OPS+ totals from a 30-30 season:

BEST              YEAR     OPS+         WORST             YEAR     OPS+
Barry Bonds       1992     205          Joe Carter        1987     104
Barry Bonds       1996     188          Brandon Phillips  2007     105
Hank Aaron        1963     179          Raul Mondesi      1999     108
Larry Walker      1997     178          Alfonso Soriano   2005     109
Willie Mays       1957     174          Preston Wilson    2000     109
Barry Bonds       1997     170          IAN KINSLER       2009     110
Barry Bonds       1990     170          Sammy Sosa        1993     111
Jose Canseco      1988     170          Dante Bichette    1996     112
Howard Johnson    1989     169          Shawn Green       1998     116
Barry Bonds       1995     168          Jimmy Rollins     2007     118

This Bonds guy must have been pretty good, huh? Actually, of the 54 instances of a 30-30 season Barry and his father Bobby account for 10 of them. Anyway …
In terms of offensive production Kinsler is having one of the worst 30-30 seasons of all time, but a 110 adjusted OPS+ is better than it looks coming from a middle infielder. On the other hand, Carter’s adjusted OPS+ of 104 in 1987 is the lowest by any 30-30 player and he split time between first base and left field. That season the average adjusted OPS+ was 125 at first base and 112 in left field, so Carter was actually a significantly below-average hitter for his positions.

Last night’s big news — the Yankees acquiring James Paxton from the Mariners — might’ve been even bigger if the Yankees had gotten their way: they were trying to land shortstop Jean Segura too. That’s the report from Jon Morosi of MLB Network, anyway.

Getting Segura would make a ton of sense for the Yankees given that Didi Gregorius is going to miss a big chunk of next season. Segura, who will turn 29 in March, has hit .308/.353/.449 over the past three seasons. He’d cost some prospects, but he wouldn’t cost the kind of money another possible option — signing Manny Machado — might cost.

Worth watching the Yankees regarding any available shortstop, obviously.

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