Major League Soccer embarks this weekend on its 24th season with, appropriately enough, 24 teams.

FC Cincinnati joins the league this season, with Nashville and Miami teed up to start next year and Austin coming aboard in 2021. MLS has added 11 teams in the past decade.

So it’s no wonder Commissioner Don Garber says MLS is still very much “a growth story.”

One more expansion club, to be announced by the end of this year, will bring the league to 28. Sacramento and St. Louis are the front runners.

The league won’t necessarily stop there, Garber told The Associated Press.

“The future plan is something we’re going to be working with our expansion committee on over the next year or so, and try to determine whether or not Major League Soccer is going to grow past 28,” he said. “There’s been no decision whatsoever in that regard and I’m not sure when exactly that ultimate decision will get made.”

Apart from expansion and everything that goes with it, the league also needs to make sure it is properly developing talent, wisely managing rosters and ensuring the right designated players are coming into the league, Garber said.

Cincinnati opens its first MLS season on Saturday night against the Seattle Sounders. Cincinnati did well in the lower-division United Soccer League last season, compiling a 23-8-3 regular-season record. Season ticket sales have so far surpassed 20,000.

The Philadelphia Union host Toronto FC in the league’s opening match of the season on Saturday afternoon.

KEY DEPARTURES: MLS has raised its profile on the international transfer market and in recent months has moved several rising stars to high-profile European teams. Canadian teenager Alphonso Davies left the Whitecaps for Bayern Munich, former Red Bulls midfielder Tyler Adams went to RB Leipzig, Miguel Almiron left MLS Cup champion Atlanta for Newcastle United and Crew goalkeeper Zack Steffen is headed to Manchester City in July.

NEW COACHES: The league welcomes four new coaches this season. Ok, so Caleb Porter isn’t new, he led the Portland Timbers to the MLS Cup in 2015. But he sat out of the league last season after parting ways with the club. He joins the Columbus Crew, the team Portland beat for the league title. Also new is Matias Almeyda, the reigning CONCACAF Coach of the Year who is taking over the San Jose Earthquakes, and Guillermo Barros Schelotto, a former MLS MVP and recently the Boca Juniors manager who is now coach of the LA Galaxy. Frank De Boer, who has stints at Ajax, Crystal Palace and AC Milan under his belt, assumes the reins at Atlanta United following the departure of Tata Martino for the Mexican national team.

SHORTER SEASON: MLS is shortening its season by a month this year, going to single-elimination playoffs and setting the MLS Cup final on Nov. 10 – its earliest finish since 2002. Because the league has expanded to 24 teams, MLS is also expanding the playoffs to include 14 teams, seven from each conference.

The all-knockout postseason replaces the two-leg format for the conference semifinals and finals that the league started using in 2003.

Garber said the new format will reward teams for top regular-season records because they’ll get greater home-field advantage. The shorter season will also ensure down the road that MLS wraps up before the start of the 2022 World Cup in Qatar, set to start on Nov. 21.

YOUNG TALENT: Atlanta’s Pity Martinez, the reigning South American Player of the Year, leads the 2019 class of fresh faces. Others to watch include attacking midfielder Marco Fabian, a Mexican national team regular who will play for the Philadelphia Union. Vancouver added an intriguing player in 22-year-old midfielder In-beom Hwang of South Korea. The average age of the newcomers to the league is 25, down two years from four seasons ago.

One not-so-young newbie but nonetheless a player to watch is Nani, the 32-year-old former Manchester United winger who agreed to a three-year contract with Orlando.

QUICK RECAP: Atlanta, in just its second year, won the MLS Cup last year, beating the Timbers 2-0 in front of a crowd of more than 73,000 at Mercedes Benz Stadium. Atlanta’s Joseph Martinez was the league’s Most Valuable Player, while setting the league record for most goals in the regular season with 31.

RANDOM NOTABLES: Colorado Rapids goalkeeper Tim Howard is retiring after this season. The 39-year-old former standout for the U.S. national team has made 257 saves in 75 appearances with the Rapids. He joined Colorado in 2016. San Jose Earthquakes forward Chris Wondolowski is on the verge of matching Landon Donovan’s all-time league scoring record. Donovan had 145 and Wondolowski is sitting at 144.