Last scored matchup
JJ isn't on today's slate. He was last scored 11 days ago, away at Milwaukee Brewers on Sunday, September 27, 2026, where he landed on singles (64.3/100), runs (57.8/100), hits (55.1/100). This page refreshes with new projections as soon as he's back in a lineup.
Recent form
JJ is 8-for-36 (.222) over his last 10 games, in line with his .241 season line. No hot streak to fade, no slump to buy — the matchup is doing the work in his score, which is the normal case. The full game log is below.
What kind of hitter he is
JJ has 17 home runs and 32 extra-base hits in 535 at-bats this season. That profile is why he grades better on the total-bases and home-run boards than his batting average alone would suggest — those boards reward damage, not just contact. Park and weather matter more for a hitter like him too, and both feed the score.
He's a left-handed bat
JJ hits from the left side, and that's the first thing the model looks at. Left-handed hitters see right-handed pitching most nights, which is the favourable side — so a lefty bat's baseline is set against righties, and drawing a left-handed starter is a genuine downgrade rather than a rounding error. When you see his score fall on a day he's still in the lineup, an opposing lefty is usually why. Handedness also shapes the park read: pull-side geometry matters more for a left-handed swing than the raw park factor suggests.
Floor and ceiling
JJ has recorded at least one hit in 82 of 137 games he's batted in — 60% — with 39 multi-hit games among them. That's a boom-or-bust profile. He'll carry a game outright and then go quiet for three, so his hits-board score tends to sit below hitters with worse power and better contact.
Home and away
JJ is hitting .223 at home (59-for-264) and .258 on the road (70-for-271) across the season. There's not much in it, which is the normal case. Home-road splits get talked about far more than they hold up.
His best game in the log
JJ's biggest night was Wednesday, September 23, 2026 at PIT — 3-for-4 with 1 driven in. That's the ceiling, not the expectation. The projection you'll see on a board is closer to his typical game than his best one, which is the whole point of projecting rather than remembering.
How our calls on JJ have graded
In the 37 games where we ranked JJ a top-20 hitter matchup, he recorded a hit 22 times — 59%. Middle of the road, which is what most players look like. Every one of those calls was graded against the real box score, misses included.
Where he lands across our boards
JJ was scored on 12 boards in that matchup, and the spread is the interesting part: singles graded 64.3/100 while triples came in at 4.3/100. Same player, same game, same opposing arm — different questions. A spread that wide usually means the matchup favours one kind of outcome over another, and it's the clearest argument for reading the board that matches what you actually care about.
How the model reads him
Take the name off JJ and the model still produces the same number, because it's scoring the matchup rather than the player. His splits against this handedness, what the opposing starter and bullpen actually allow, how many plate appearances he's likely to get, the park, the weather, how he's swinging lately. All of it lands on a 0–100 scale against everyone else playing today. We don't publish how it's weighted. We publish every result it produces.
What we'd flag
Three caveats worth carrying. Not every player gets a posted line — book coverage runs to about 87% for confirmed starters, so a blank line is the market's silence, not ours. Lineup changes land late enough to strand a projection published hours earlier. And judging any of this on a single night is meaningless; the model is tuned on hundreds of settled outcomes.