AL Players of the Month: August 2026

The final month of the 2026 MLB regular season is upon us. Some teams are gearing up for a postseason push as the playoff races heat up, while for others, September is a time to give some fresh faces a brand-new look as teams turn the page toward the 2027 season.

But before looking ahead to the month of September and what might shake out between now and when the playoffs begin, it’s important to give appreciation to the players who stood above the rest during an eventful month of August.

August featured plenty of storylines, and there was no shortage of performances to choose from for Just Baseball’s picks for Hitters and Pitchers of the Month.

This month’s picks feature a wide variety of names, from a couple of rookies who are putting the finishing touches on strong seasons to a pair of veterans who are helping keep each of their respective team’s postseason hopes alive.

In the end, our picks for Hitter and Pitcher of the Month for August are two up-and-coming names in this league, though the honorable mentions made it a difficult conversation. Let’s dive into the selections.

AL Player of the Month: Jac Caglianone

August Stats: 24 G, 98 PA, 6 HR, 26 RBI, 3 SB, .411/.429/.684, 208 wRC+, 1.4 fWAR

While it’s been a season to forget for the Kansas City Royals, who sport the third-worst record in the American League, there’s been one major silver lining from the season: Jac Caglianone has officially arrived.

The 23-year-old has been on a tear in the second half of the season, and it finally appears that the Royals have the Robin to Bobby Witt Jr.’s Batman. In just under 100 plate appearances in August, Caglianone was the best hitter in all of Major League Baseball, pacing the sport in batting average, OPS, wOBA, and wRC+.

Fueled by his six home runs and eight doubles, Caglianone led the AL with 26 RBI, all while posting the lowest strikeout rate of any month in his MLB career to this point at 18.2%. It just goes to show that, with his monumental power, if he can cut down on the swing-and-miss even a little bit, he has the ability to do some incredible damage at the plate.

Cags’ quality-of-contact metrics have been off the charts this season, fueled by a 98th-percentile hard-hit rate (54.8%), a 97th-percentile barrel rate (14.2%), and a 97th-percentile average exit velocity (93.2 mph). While his surface-level numbers have all been impressive as is, his expected metrics have followed suit and suggest that this type of production is no fluke.

After posting a sub-50 wRC+ and a .532 OPS in 62 MLB games last season, Caglianone is back to looking like the version of himself that flew through the minor leagues. The 2026 season has been a major step forward for Caglianone, and he’s given the Royals another piece to build around this offseason as they turn to the drawing board and figure out how to get back to their winning ways.

Honorable Mentions

Tristan Peters

August Stats: 27 G, 87 PA, 6 HR, 14 RBI, 2 SB, .320/.414/.640, 194 wRC+, 1.5 fWAR

Not too far behind Caglianone in many categories during the month of August was Tristan Peters. The 26-year-old White Sox outfielder finished with the second-best slugging percentage, OPS, wOBA, ISO, and wRC+ in August, while posting 1.5 fWAR, which was tied for the best mark in the American League.

Six of his 12 home runs on the season came in August, and the lefty has been a big piece of a White Sox team that is fighting to hold onto the division lead in the AL Central.

It’s been a career year for Peters, who was designated for assignment by the Rays back in December before being traded to the White Sox a few days later. Though he won’t win the award, with 3.8 fWAR on the season, Peters could sneakily end up as one of the finalists for AL Rookie of the Year when all is said and done.

Pete Alonso

August Stats: 28 G, 118 PA, 9 HR, 22 RBI, 0 SB, .333/.407/.619, 186 wRC+, 1.4 fWAR

Speaking of a player who is impacting the postseason race, the Orioles have climbed back into the AL postseason picture thanks to Pete Alonso and his second-half surge.

Alonso is putting up his best season since his Rookie of the Year season back in 2019, and he really caught fire in August. Across 28 games, Alonso launched an AL-leading nine home runs while driving in the second-most runs in the AL (22).

He was one of three AL hitters (Caglianone, Peters) to finish the month with an OPS north of 1.000, and the fact that he slugged nearly .620 while batting over .330 for the month is a testament to how locked in he was at the plate.

In 138 games this season, Alonso is slashing .268/.360/.500 with a 141 wRC+ while posting an fWAR of 3.9, his highest mark since 2019. He’s currently posting the highest hard-hit rate (56.8%) and average exit velocity (94.1 mph) of his career, while walking more than he ever has (11.2%). Alonso is making himself right at home in Baltimore in the first year of his five-year contract with the Orioles.

AL Pitcher of the Month: Parker Messick

August Stats: 6 GS, 35.2 IP, 2.02 ERA, 39 K, 7 BB, 3 HR, 1.1 fWAR

At 25 years old, Parker Messick has really emerged as the ace of the Guardians’ pitching staff. Ranking third in the American League in both ERA (2.46) and fWAR (4.3) on the year, only behind the two AL Cy Young favorites in Cam Schlittler and Dylan Cease, Messick has seemingly continued to improve as the season progresses.

In six starts and 35.2 innings in the month of August, Messick posted a 2.02 ERA while putting up some standout underlying numbers as well. On top of his ERA, the southpaw ranked fourth in FIP and SIERA, third in xFIP, and second in xERA among qualified arms in August.

With a 27.7% strikeout rate, Messick was one of the top punchout artists in the month while walking just five percent of batters faced. He was also one of the premier ground-ball artists in the month with a 46.8% ground-ball rate, and he posted a WHIP under 1.00.

While his ERA might not have been the lowest in the month, his peripherals were better than the names ahead of him on the ERA leaderboard. He made an impact in a multitude of ways and posted these results over a greater sample size than the names around him as well.

The Guardians’ rookie is quietly posting a Cy Young-caliber season thanks to his ability to do a lot of things well on the mound. He’s in the 79th percentile or better in average exit velocity, hard-hit rate, and barrel rate, keeps the ball on the ground at a well-above-average rate, and is near the top of the league in both strikeout rate and walk rate.

It’s been a season to remember for Messick, and August might have been his best month yet.

Honorable Mentions

Cal Quantrill

August Stats: 6 G (5 GS), 31 IP, 1.45 ERA, 29 K, 4 BB, 3 HR, 0.9 fWAR

The American League ERA leader for the month of August was Cal Quantrill, who has found new life with the Texas Rangers.

After posting an ERA over 6.00 with the Miami Marlins and Atlanta Braves in 2025, Quantrill signed a minor-league contract with the Rangers back in February. His contract was selected by Texas in April, and he hasn’t looked back ever since.

After working as a swingman earlier in the season and posting a 4.58 ERA across 13 appearances (six starts) between June and July, Quantrill has emerged as a crucial member of the Rangers’ rotation as the team looks to keep its postseason hopes alive.

Across five starts (six appearances) and 31 innings in August, the 31-year-old posted a 1.45 ERA while ranking fifth in the AL in FIP. He raised his strikeout rate from 14% in July to 24.4% in August while cutting his walk rate in half from 7% to 3.3% as well. He managed to post the third-best WHIP (0.84) in the AL in August, thanks to an opponent batting average of just .191.

Quantrill has evolved into a journeyman, now playing for the sixth different team in his eight-year career, but his production this past month was some of the best of his career. The Rangers will hope he can continue this run into September as the postseason race comes to its final stages.

Reid Detmers

August Stats: 5 GS, 30 IP, 1.50 ERA, 29 K, 6 BB, 2 HR, 0.9 fWAR

Reid Detmers is putting the finishing touches on his career year with his best month yet, posting a 1.50 ERA in August that trailed only Quantrill in the American League. He also ranked second in FIP and posted a WHIP below 1.00 in the month, finishing with an impressive strikeout-to-walk ratio of 29:6.

Detmers, 27, is currently pitching to a career-best 3.54 ERA with a FIP of 3.19 that ranks fifth among qualified AL starters. It’s been a really encouraging step forward for the southpaw this season, as he’s maintained a K/9 over 10.00 while cutting his walk rate by nearly a full walk per nine innings.

It may be another season to forget for the Angels, but at least Detmers has taken a significant step forward in the rotation. Among all qualified pitchers in MLB, Detmers has the lowest second-half ERA at 1.55, to go with a WHIP of 0.91 that ranks within the top 10. While the team might be limping to the finish line, Detmers is doing just the opposite.