Three MLB teams that could be the biggest season-ending spoilers

With a little more than a week left in the MLB regular season, there are still plenty of postseason dreams that could be realized ... and plenty of postseason hopes that could be crushed.

While FanGraphs gives six American League and five National League teams a higher than 90% chance to make the postseason, homefield advantage first-round byes and final seeds are still to be determined. Those determinations may come based on how well teams likely heading to the postseason play against teams that are already planning for 2026.

So which teams could be the biggest regular-season spoilers for this year's postseason participants? Here are three to watch down the stretch.

Miami Marlins

Coming off a sweep of the Colorado Rockies in Denver, Miami now has six road games ahead (three at the Texas Rangers followed by three at the Philadelphia Phillies) before ending the season at home against the New York Mets.

Miami has won seven of its last eight games and eight of its last 11, so it's heading to the Lone State State hot, something the Rangers don't need as they try to stay in wild-card contention. The same can be said for the Phillies as they try to reach the NL's top seed.

Imagining the Mets heading to South Florida to face a better-than-expected Miami team and needing to win games to secure a postseason spot could make that series one of the most fascinating ones to watch as the season concludes.

Arizona Diamondbacks

The Diamondbacks enter Friday just two games out of the NL wild-card chase, so they aren't completely out of the picture. However, with just a 5% chase to make the postseason, the odds are slim.

Arizona also faces a gauntlet in its final nine games, with Philadelphia and the Los Angeles Dodgers coming to the desert for three games each before Arizona finishes the season in San Diego with three games against the Padres.

Philadelphia is just two games behind the Milwaukee Brewers for the NL's top seed while San Diego trailed the Dodgers by 2.5 games heading into Thursday night. All three teams need to win against the Diamondbacks while Arizona needs to collect victories to pull off the improbable and make the postseason.

Chicago White Sox

The team that lost the most games in modern MLB history last season (121) has improved this season, but the White Sox are still way outside the postseason picture as they prepare for their final nine games.

Six of those games come against a pair of teams that need to rack up wins against the 57-96 White Sox, starting on Friday night on the South Side as the Padres pay a visit. After that, Chicago heads to the Bronx to take on the New York Yankees for three games.

If the Padres are to catch the Dodgers, winning against the White Sox is a must. The Yankees, meanwhile, have the top AL wild-card spot by two games over the Houston Astros and Seattle Mariners, so wins are vital to New York's seeding.

By the time the White Sox head to Washington to face the Nationals for the final series of the season, they could have already done plenty of damage to contenders in both leagues.