He is not the interesting part of the last fourteen days.
Sixteen hits, five homers, fourteen driven in, a Bases Gained rate that nearly doubled the season number, 0.88 per plate appearance against a 0.49 he’d been carrying all year. Everybody who watches the Cubs already knows. Alex Bregman is a very good hitter doing very good hitter things in a hot stretch.
What I wanted to find was the opposite, the guys nobody had any reason to expect, the ones whose last two weeks look nothing like the season attached to their name. So I ran every hitter’s Bases Gained rate over the last fourteen days against his own full-season rate and sorted by the gap. This is a two-week window so we are talking pure production, what a bat did to make runs and nothing else
Bregman’s jump was plus-0.39. Eight hitters jumped further, and most of their names would not stop your thumb on a phone screen. That is the point.
Jac Caglianone, and it is not close.
The Royals’ rookie has the biggest two-week jump in baseball, a Bases Gained rate of 1.06 against a season mark of 0.53. He exactly doubled himself. Eighteen hits in his last forty-eight at-bats, four doubles, four homers, thirteen driven in. This is the same player a lot of people had already filed under bust after a rough first look in the majors, and for two weeks he has been the most productive version of himself that exists.
I want to pause for a minute. With a rookie, no one really knows quite what to expect. Is the real number the cold start or the hot streak? Bases Gained does not pretend to know either. It just says that for two weeks, no MLB hitter has outrun his own reputation by more.
Caleb Durbin and Wilyer Abreu are both in the top three, on the same team, at the same time. Neither one is a household name. There is a likelihood that is about to change.
Durbin is the bigger shock on paper, a plus-0.50 jump to a 1.02 rate, sixteen hits and sixteen RBI packed into two weeks from a player most fans could not pick out of a lineup. He was a big question mark as the Red Sox suffered through the early part of the season.
Abreu is right behind him at plus-0.48, and his line is fun to read. He drew eleven walks in forty-one at-bats and still hit five home runs. He stopped chasing and got rewarded for it, patience and power showing up in the same fortnight, which almost never happens by accident.
Two unheralded bats catching fire together is not nothing for a team fighting for position in August. It is the kind of thing that shows up in the standings a week before anyone can explain it.
Jackson Merrill spent most of this year making people wonder if the rookie season was the fluke. For two weeks, he has answered.
A plus-0.46 jump, a 0.98 rate, seventeen hits and fifteen driven in. This is not a nobody getting hot, it is a young star climbing out of the hole a sophomore slump dug for him, and it counts as unexpected precisely because so many people had quietly written off the version of Merrill that looked special last summer. The talent was never gone. It went quiet, and now it is loud again.
Alec Burleson has the single best two-week rate on this entire board, 1.10 Bases Gained per plate appearance, higher than Caglianone, higher than Bregman, higher than anyone. His jump over his season rate is plus-0.46. Fourteen hits, four doubles, four homers, eight walks in forty-one at-bats.
He is not on a magazine cover. He is not in the MVP conversation. He has been the most productive hitter in the sport for two weeks, and the only people who noticed live within driving distance of Busch Stadium. That is the whole reason a metric like this earns its keep. The stars announce themselves. The Burlesons you have to go looking for.
Spencer Torkelson does not have a graphic, but he belongs in the conversation for a reason that makes the point better than anyone above.
His two-week jump is plus-0.36, right in Bregman’s range. He did it with zero home runs. Everything Torkelson has produced over the last fourteen days is walks, doubles, and getting himself into scoring position, the quiet stuff that never makes a highlight package and never trends. If you were watching for the long ball to tell you he was back, you would have missed it completely. Bases Gained did not, because it counts every base a hitter creates, not just the ones that clear a fence.
That is the difference between a stat that follows the noise and one that follows the runs. Bregman was easy. Everybody saw Bregman. The other guys on this list are what you find when you stop watching the names and start watching the bases.
Bases Gained is an original framework from The Baseball Nerd. Two-week and season figures are rate stats, Bases Gained per plate appearance, with no positional adjustment applied to the short window. Data via FanGraphs, through August 14, 2026.
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