October has a way of introducing a player to the whole sport in a hurry. The familiar stars will have their turns again, from Shohei Ohtani and Yoshinobu Yamamoto to Bryce Harper, but this postseason field could also carry a fresh set of first-timers. With the final week of the regular season underway, these 10 players have positioned themselves to matter if their clubs make the bracket.
All statistics below are through the start of Tuesday’s games.
New bats ready for the October spotlight
Miguel Vargas, White Sox
Vargas has been central to Chicago’s startling 2026 revival. The former Dodgers prospect reached the Majors with Los Angeles in 2022, then changed uniforms at the 2024 Trade Deadline in the deal that sent Tommy Edman and Michael Kopech to the Dodgers. He closed that season with a White Sox club that lost a Modern Era-record 121 games, while Los Angeles went on to begin its run of consecutive World Series championships.
After uneven results over his first two South Side seasons, Vargas has broken through with an .845 OPS and 33 homers. He is tied for seventh among position players in FanGraphs WAR and made his first All-Star appearance memorable with a 433-foot blast in Philadelphia. If Chicago completes its push into the postseason, Vargas will arrive as much more than a good turnaround story.
Drake Baldwin, Braves
Baldwin has made catching look unusually steady during a period when Atlanta has dealt with injuries and uneven production from several important players. He won the 2025 NL Rookie of the Year Award after posting an .810 OPS, 19 home runs and 3.2 WAR, placing him among the game’s 10 most valuable catchers.
He has followed that year with an .813 OPS and 24 homers across 133 games in 2026. The Braves missed the playoffs a year ago, but Baldwin’s reliability has helped put them on track for a return. His first October could put an established young catcher on a much bigger stage.
Josue De Paula, Dodgers
De Paula entered the month as the Dodgers’ top prospect and MLB Pipeline’s No. 6 prospect overall. Ohtani’s trip to the injured list opened the door, and the 21-year-old has taken it: a .974 OPS, 10 walks and only four strikeouts in his first 10 big league games. His first homer traveled 416 feet at Miami’s loanDepot park.
- Ohtani went on the injured list earlier this month.
- Los Angeles promoted De Paula from the Minor Leagues.
- De Paula mostly filled designated-hitter duties and immediately produced at the plate.
- When Ohtani returns, De Paula’s roster path could depend on available work in left field alongside Teoscar Hernández or a bench role as a pinch-hitting threat.
There may not be a simple postseason roster spot waiting for him, but his opening impression has been loud. Whatever happens this October, De Paula looks like a substantial piece of the Dodgers’ future.
Chandler Simpson, Rays
Simpson is making a case for the most unusual qualified-player season in baseball. The Rays outfielder is in the AL batting-title chase, nearing 50 steals and has made a major defensive jump in the outfield. He has done all of it without hitting a home run.
A qualified hitter has not completed a homerless season since Myles Straw in 2022. The more revealing comparison reaches back to Jamey Carroll in 2011, the last qualified player to pair zero homers with an OPS anywhere close to league average. Simpson is still headed toward roughly 2.5 WAR, a notable accomplishment in an era built around power.
Junior Caminero, Yandy Díaz and Drew Rasmussen may draw more of the attention around Tampa Bay, but Simpson can change an inning with contact, speed and defense. That skill set can get awfully uncomfortable for an opponent in October.
Luis García, Yankees
New York also could have received a rookie jolt from Spencer Jones, but García’s season has been too big to overlook. Before the Yankees acquired him from Washington at the Trade Deadline, García had built an .873 OPS with 23 homers in 104 games for the Nationals. In 39 games with New York, he has added a .769 OPS and seven more home runs.
That puts him at 30 homers between the two clubs, easily beyond his previous career high of 18. García began the year with a .266/.299/.410 career line over portions of five seasons in Washington, but he has found more damage by striking the ball harder and getting it airborne to the pull side. In a Yankees lineup full of established names, he could be the newer face who swings a series.
Travis Bazzana, Guardians
The first overall selection in the 2024 Draft has packed plenty into 2026. Bazzana represented Australia at the World Baseball Classic, debuted in April, made the AL All-Star team in July and became a key contributor for a Cleveland club pursuing a third consecutive postseason berth.
He owns a .746 OPS in 118 games, and his timely work has been especially valuable with the Guardians clinging to a playoff position.
- On July 18, Bazzana hit the first walk-off home run of his Major League career.
- On Sept. 4 against Detroit, he tied the game with an eighth-inning homer.
- He then ended that game with a walk-off single in extra innings.
The Australian rookie has already handled some high-leverage moments. Cleveland could need more of them in October.
Wyatt Langford, Rangers
Texas selected Langford fourth overall in the loaded 2023 Draft, the same year the Rangers captured the first World Series title in franchise history. The club has not returned to the postseason since, though it still has routes back this fall as either an AL West winner or the final American League Wild Card entrant.
Langford, 24, has supplied steady value through his first three big league seasons. He carries a career .764 OPS and can affect a game with his glove and his legs as well as his bat. The sense around him is that another level remains to be reached; a first postseason might provide the setting for that jump.
Arms that could change a series
Logan Henderson, Brewers
Jacob Misiorowski has received plenty of deserved attention in Milwaukee, but Henderson has authored a breakout of his own. In 17 starts, he has put up a 2.51 ERA with 107 strikeouts.
Henderson’s four-seam fastball and changeup give him a difficult two-pitch foundation, and he has paired it with command, missed bats and strong run prevention. The Brewers have questions behind the top two names in their rotation. Henderson may have the chance to answer one of them when the games tighten up.
Andrew Painter, Phillies
Philadelphia’s rotation picture became less certain when Jesús Luzardo went on the 15-day injured list with left shoulder inflammation. Cristopher Sánchez and Zack Wheeler are expected to take the ball for the Phillies in the first two postseason games, but Luzardo’s availability could determine whether Painter gets an important assignment.
- Painter opened his Major League career with a 7.06 ERA over his first 12 appearances.
- The Phillies sent the rookie to the Minors for about six weeks.
- Since his return, Painter has recorded a 3.88 ERA and 54 strikeouts in 10 starts.
- If Luzardo cannot go, Painter and Aaron Nola could be in line for the next turn.
That is a remarkable swing for a rookie who looked overwhelmed early. Painter has given Philadelphia a possible October option at precisely the time its depth may be tested.
A late-arriving Red Sox regular
Nathaniel Gasper, Red Sox
Gasper is not the obvious name on a list of possible postseason difference-makers, which is part of what makes his year stand out. The 30-year-old debuted with Boston in 2024, spent time with Minnesota in the Majors in 2025 and was designated for assignment in January.
- Gasper was designated for assignment during the offseason.
- Boston claimed him on waivers in February.
- He became a regular contributor in the Red Sox lineup during the 2026 season.
In 63 games, Gasper has produced an .823 OPS with nine homers. The waiver claim has become one of Boston’s sharpest offseason moves, and his season suggests he still has another surprise or two available if the Red Sox get their October opportunity.
