Vladimir Guerrero Jr.'s Slump Isn't Just Bad Luck. That's the Problem.

Whether you believe it is injury related or not, Vladimir Guerrero Jr.’s slump can’t simply be explained away as a BABIP-driven bad-luck stretch. His expected stats match his underachieving surface level stats, and both have significantly and steadily declined since 2024. Vladimir Guerrero Jr.’s 2026 power decline isn’t due to bad luck and that is a serious problem for fantasy baseball managers.

Why This Isn't A BABIP Story

As you can see from the chart above Guerrero Jr.’s 2026 offensive statistics have severely regressed from his career averages. His current .290 BABIP is 14 points lower than his career average, but his BABIP has been as high as .342 as recently as the 2024 season.

Declines in BABIP are often explained away as a batter hitting into some bad luck. However, when a batter’s expected stats decline at the same rate as his traditional surface stats, “bad luck” can’t be used as an excuse for his lack of offensive production. The following are Guerrero Jr.’s traditional vs. expected stats from 2024 to present. It shows a gradual decline in three of his key offensive statistics.

The Specific Mechanical Problem

While Guerrero Jr.’s current xBA has decreased since 2024 it remains in the 92nd percentile, per Statcast. His bat speed is above average and is in the 93rd percentile, and his plate discipline is still elite based on Guerrero Jr.’s K% being in the 94th percentile this season.

Guerrero Jr.’s lack of offense seems to be connected to his quality of contact. His swing is as fast as it’s always been but based on his declining squared up contact rate, he’s not getting as much of the potential exit velocity on his batted balls based on his bat speed and the speed of the pitch he’s trying to hit.

His 90.0 mph average exit velocity is 3.8 mph lower than his 2024 average velocity and not surprisingly, his hard-hit rate is 11% lower than his 54.8% rate from 2024. His current 6.9 barrel rate is almost half of his 13.7 rate from 2024.

The Back Issue And Other Contributing Factors

Despite Guerrero Jr.’s pedestrian 2026 offensive statistics, he was named as the starting first baseman for the AL All-Star team. He has opted not to attend the game, citing a nagging lower back issue he’s been dealing with for the past month or so as the reason. He’s only missed five games due to back tightness this season, but back issues have famously hurt the careers of sluggers like Don Mattingly and Christian Yelich, and Guerrero Jr.’s back injury needs to be monitored.

Future Hall of Famer Albert Pujols believes Guerrero Jr.’s struggles at the plate may stem partly from swing mechanics that likely predate his back injury. Pujols, who managed Guerrero Jr. in the WBC Classic, says his disappointing offensive numbers may be related to a batting stance that causes him to “wrap his bat” over his helmet. According to Pujols, Guerrero Jr. is holding his hands too far back, which has lengthened his swing. Guerrero Jr.’s Statcast batting stance data shows no major changes from 2024 to 2026. That makes sense because Pujols is referring only to how he holds the bat, not his positioning in the batter’s box.

The Fantasy Verdict

Despite having a higher career ground ball rate (48.3) than typical sluggers, Guerrero Jr. has a career 29 home run 162 game average. He has just four home runs through his first 86 games this season and based on his 4.1 xHRs, Statcast believes his home run total is genuinely reflective of his quality of contact. By comparison, through his first 86 games of the 2024 season Guerrero Jr. had 13 home runs.

Major fantasy baseball projection models provide a glimmer of hope for Guerrero Jr.’s rest of season production. Specifically, ATC projections predicts that he’ll bat .292, hit another 11 home runs and drive in an additional 40 RBI, (giving him a total of 75) in his next 70 games.

Just about every fantasy baseball manager is justifiably disappointed with Guerrero Jr.’s overall power production since they usually rely on corner infielders for power production, but unfortunately their hands are tied. They’ll be selling low if they try to move him but, perhaps a savvy manager could use Guerrero Jr.’s name recognition and optimistic rest of season projections to their advantage and work out a favorable trade. Recent transactions in yahoo! fantasy baseball leagues have Guerrero Jr. traded for struggling Padres SP Walker Buehler. Another trade has Guerrero Jr. being moved for Tigers SP Framber Valdez and injured Pirates OF Oneil Cruz. Still another has Guerrero Jr. traded straight up for Orioles C Adley Rutschman.

If you do have a better option on your roster, benching Guerrero Jr. until he finds his way out of his funk might not be such a bad idea at this point. However, if Guerrero Jr.’s back issue turns out to be something more serious or requires an IL stint, it might be a while before you’ll be putting him back in your fantasy baseball starting lineup.

Questions About Vladimir Guerrero Jr.'s Power Decline, Answered

Is Vladimir Guerrero Jr.’s slump just bad luck?
No. His expected statistics have declined alongside his traditional production, indicating this is more than a BABIP-driven slump. The combination of lower expected metrics, weaker quality of contact, and reduced power production points to a genuine decline rather than an unlucky stretch that should naturally correct itself.

What is causing Vladimir Guerrero Jr.’s power decline?
The primary issue appears to be declining quality of contact. While his bat speed and plate discipline remain strong, his squared-up contact rate, average exit velocity, hard-hit rate, and barrel rate have all declined substantially, reducing the amount of authoritative contact he is producing.

Is Vladimir Guerrero Jr.’s back injury the cause of his slump?
The back issue may be contributing, but it does not fully explain the decline. Guerrero Jr. has dealt with lower back tightness, yet concerns about his swing mechanics and contact quality appear to predate the injury, suggesting multiple factors are involved.

Should fantasy baseball managers trade or bench Vladimir Guerrero Jr.?
Benching him is a reasonable option if you have a stronger alternative while waiting for signs of improvement. Trading him is more complicated because his current production lowers his value, although some managers may still be able to capitalize on his name recognition and optimistic rest-of-season projections.