John Peck’s first month in the majors has been a study in contradiction for the Detroit Tigers.
The box score says one thing. The underlying data says something else.
After Tuesday’s 0-for-4 night in Detroit’s 3-1 loss to the Washington Nationals, Peck was sitting on a .169/.286/.186 slash line through his first 59 Major League at-bats. He still had not hit a home run, and he had only one extra-base hit to his name.
That kind of line is hard to dress up. But it also doesn’t capture how often Peck has actually been squaring the ball up.
Against Washington, he drove several balls with authority, including two outs that came off his bat at more than 105 mph. The Nationals turned those swings into outs, which left the rookie with nothing to show for a handful of promising plate appearances.
The same split showed up in his Statcast profile. Entering Tuesday, Peck owned a .232 expected batting average and a .369 expected slugging percentage on Baseball Savant, both well above what he had produced in games. His .330 expected weighted on-base average also outpaced his .247 actual mark.
The quality of contact was there, too. Peck carried a 40.5% hard-hit rate and a 9.8% barrel rate, signs that this was not just a young hitter slapping weak grounders around and hoping for luck.
Of course, expected stats only tell part of the story. They measure the shape and force of contact, not every little thing that decides whether a ball drops in or finds a glove.
And the sample is still tiny. Before Tuesday, Peck had put only 42 balls in play, so a few hard-hit outs can tilt the picture fast.
There were encouraging signs beyond the contact profile as well. Peck entered the game with a 12.1% walk rate and a 21.2% strikeout rate, numbers that suggest Major League pitching hasn’t swallowed him whole.
That doesn’t make the .169 average disappear. It does mean Detroit has reason to look past it.
The Tigers brought Peck up after he hit .285/.328/.511 with 10 home runs, 17 doubles and 19 stolen bases in 58 games at Double-A Erie. His time at Triple-A Toledo was cut short by injury, so he made the jump to the majors without much runway at the highest minor league level.
Manager A.J. Hinch already told Peck he was “here to stay” after the rookie picked up his first two Major League hits and drove in three runs in an earlier win, as detailed previously by Tigers On SI. That kind of backing matters, because Detroit is evaluating more than just the bat.
Peck has started 20 games at shortstop, and his speed gives him another way to help even when the hits aren’t falling. The Tigers still have to figure out whether he can handle shortstop, whether the hard contact keeps coming and how he responds once pitchers build a better scouting plan against him.
With four games left, none of those questions are getting answered for good. But they can keep adding to the evidence.
The actual results have been rough. The deeper numbers say Peck has done more than the slash line suggests, and that’s enough for the Tigers to keep watching closely.
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