For all but the four remaining playoff teams, October ended all too quickly. The A's, Brewers, Twins, Rays, Braves and Dodgers all made it to the postseason, but their postseasons are over.

So what's next?

Well, it's about time for them to start looking at the upcoming free-agent class. For a team that just made it to the postseason, but needs to take the next step, a few key acquisitions in the offseason can make all the difference.

Here are the free agents who could help -- one fit for every 2019 playoff team that's been eliminated in the Wild Card Games and Division Series.

Teams are listed in the order in which they were eliminated. Also, for this exercise, each playoff club's free-agent fit has to come from a different team. So the Braves' move can't just be to re-sign Josh Donaldson, for example.

Brewers: Josh Donaldson, 3B (Braves)
Why he fits: Mike Moustakas was a nice re-signing by Milwaukee last offseason -- he hit 35 homers in an All-Star 2019. But with Donaldson proving himself to still be a star-level player during his one-year deal with the Braves, he'd be an all-around upgrade at the hot corner.

Moustakas has power, sure, but so does Donaldson (37 homers), and he's a more complete hitter (127 OPS+ to Moustakas' 114). Donaldson also had a fine season defensively, ranking second among third basemen with 15 Defensive Runs Saved behind Matt Chapman (Moustakas had zero DRS). Entering his age-34 season, Donaldson might be available on another short-term deal, and he should provide big production. He'd be one dangerous bat to pair with Christian Yelich in the heart of the Milwaukee lineup, that's for sure.

A's: Jake Odorizzi, RHP (Twins)
Why he fits: The A's have a promising young core of starters in Sean Manaea, Jesus Luzardo and A.J. Puk, plus Frankie Montas and staff veteran Mike Fiers. But Brett Anderson, Homer Bailey and Tanner Roark are all free agents with innings to replace, and the remaining young starters could use a consistent innings-thrower alongside them to stabilize the rotation, because they're all but a sure thing. Manaea was great when he pitched, but he didn't pitch until September as he recovered from left shoulder surgery. Luzardo and Puk are the team's top two prospects, but they saw limited action in 2019 and worked out of the bullpen.

Odorizzi shouldn't break the bank as a free-agent starter, even though he did have something of a breakout year for the Twins, so he could be the same type of value signing that Fiers was last winter. The 29-year-old right-hander has averaged 30 starts and 165 innings a year over the last six seasons, with a 3.88 ERA in that span. Odorizzi even turned in a strong first career postseason start against the Yankees in this year's ALDS. Solidifying the A's starting rotation could propel them to a third straight playoff run.

Twins: Madison Bumgarner, LHP (Giants)
Why he fits: The Twins went into this postseason with their starting rotation in flux. Bumgarner is exactly the type of pitcher to stabilize it going into next year. José Berríos is a great talent, but the Twins need more, especially if they lose Odorizzi to another team in free agency. That's where the longtime Giants ace comes in.

The 30-year-old Bumgarner can still be a workhorse. After his injury-shortened 2017-18 seasons, he responded with a Major League-high 34 starts, 207 2/3 innings pitched, a 3.90 ERA and 203 strikeouts this season. Plus, the Bomba Squad's window is now. A veteran like Bumgarner is just what they need. And his postseason track record has to be enticing for a team looking to compete with American League powerhouses like the Yankees and Astros.

Braves: Anthony Rendon, 3B (Nationals)
Why he fits: The Braves bet on Donaldson regaining his superstar form on a one-year deal in 2019. That deal paid off big-time. But now Donaldson is headed for free agency again. Sure, Atlanta could make a play to re-sign him … but why not go for the big kahuna?

This should be just the beginning of the Braves' window for championship contention. Freddie Freeman is signed through 2021. Ronald Acuña Jr. is 21 and locked up long-term. Ozzie Albies is 22 and the same goes for him. Mike Soroka is an emerging ace, and he has Mike Foltynewicz and Max Fried behind him. So why not try to land Rendon to a long-term deal? He's the best position player out there, he's in his prime at age 29, and if the Braves are going to be a National League powerhouse, Rendon is the MVP-caliber addition who can help them get there.

Dodgers: Will Smith, LHP (Giants)
Why he fits: There was some chatter in September linking the Dodgers to Rendon. But they do have Justin Turner for one more year, and considering Kenley Jansen's shakiness and the way they managed their bullpen in October -- going to Clayton Kershaw in the biggest spot of Game 5 of the NLDS, for example -- they could use a relief ace.

Smith is that. The 30-year-old left-hander had 34 saves, a 2.76 ERA and 96 strikeouts in 65 1/3 innings for the Giants in 2019, and he's just the type of bullpen arm the rival Dodgers need for another World Series push in 2020. Smith has made over 50 appearances five years running, with an even 3.00 ERA over that time and a 133 ERA+, meaning he's been 33 percent better than league average. Plus, he was linked to the Dodgers leading up to the Trade Deadline in July. Now they could just sign him.

Rays: Marcell Ozuna, LF (Cardinals)
Why he fits: Leading up to the 2019 Trade Deadline, one of the Rays' priorities was adding right-handed power. They got Jesus Aguilar, but that didn't really pay off. So the Rays could still use a big right-handed hitter, and if that hitter can lock down the designated hitter role, which featured a rotating cast for Tampa Bay this season, all the better.

Ozuna's bat is real -- aside from his 29 home runs in the regular season and his hot start to the postseason, Ozuna's underlying numbers this year were better than his stat line showed. Plus, a move to the AL could mean Ozuna doesn't have to play the outfield as much. Defense isn't his strength; he ranked near the bottom of the league with a minus-8 Outs Above Average rating this season, for example. The Rays could deploy him mainly as a DH, and rotate him into the outfield if needed.

And Ozuna could be the type of opportunistic signing the Rays love to make. A 28-year-old potential All-Star hitter won't be the cheapest option out there, but a defensively limited corner outfielder might not command the highest price tag, either. And as the Rays look to move forward after pushing the Astros to the brink in the ALDS, an Ozuna-type hitter is exactly who they should be looking for.