Houston Astros teammates George Springer, left, and Alex Bregman celebrate after Springer hit a home run against the Pittsburgh Pirates last Wednesday.

NEW YORK — The last time the Houston Astros went to Cleveland, they made a boozy, bubbly mess in the visitors' locker room at Progressive Field.

They're about to invade the home clubhouse, too.

Gerrit Cole, Justin Verlander and four of their teammates will lead the American League team at the MLB All-Star Game on July 9 in Cleveland. Major League Baseball unveiled full rosters for the Midsummer Classic on Sunday, and Houston topped all big league clubs with six players. No other AL team has more than three.

"Impressive," Verlander said. "I mean, I think we could have a lot more."

Houston's Michael Brantley, Alex Bregman and George Springer will be in the starting lineup, and Cole, Verlander and Ryan Pressly are on the pitching staff. It will be the first trip to Cleveland for those Astros since Game 3 of an AL Division Series last year, when Houston won 11-3 to complete a sweep of the Indians.

The Colorado Rockies, Los Angeles Dodgers and Milwaukee Brewers lead the National League with four players each. The All-Star Dodgers are Cody Bellinger, Walker Buehler, Clayton Kershaw and Hyun-Jin Ryu — plenty of familiar faces for Los Angeles manager Dave Roberts, who's heading up the NL squad.

Milwaukee will be represented by Yasmani Grandal, Josh Hader, Mike Moustakas and Christian Yelich. It's the second appearance for Hader, who came under fire when racist and homophobic tweets resurfaced on his Twitter account during last year's game. Hader apologized for the tweets, which he sent as a teenager.

Atlanta Braves teammates Ronald Acuna Jr. and Mike Soroka are set to be this year's youngest players, with each 21; the Braves said it's the first time two players younger than 22 from the same team were named All-Stars.

Soroka, a pitcher, was among the players whose election was announced Sunday. Acuna was named when the starters were announced Thursday, along with 29-year-old first baseman Freddie Freeman, an All-Star for the fourth time and a starter for the second year in a row.

The NL team includes just three hitters in their 30s: Grandal and Moustakas are 30, and Charlie Blackmon will turn 33 today. Depending on who serves as the team's designated hitter, the NL could have the youngest starting lineup in All-Star Game history.

"I think it's just the beginning here," said Braves manager Brian Snitker, at age 63 a freshman All-Star on Roberts' staff. "As I've said, I think this is going to be a yearly occurrence because these kids are going to be around for a long time."

The All-Star rosters feature 31 first-time selections.

The Yankees have the AL's best record but boast just three All-Stars: Aroldis Chapman, D.J. LeMahieu and Gary Sanchez. Gleyber Torres and Luke Voit were also contenders, while Aaron Judge — injured for much of the season — narrowly missed out on a spot via fan balloting.

Fans of the Boston Red Sox, who won the World Series last year, won't be pleased that shortstop Xander Bogaerts, third baseman Rafael Devers and ace Chris Sale were omitted despite strong statistics. Boston's only representatives as of now are Mookie Betts and J.D. Martinez.

Verlander earned his eighth All-Star nod, tied with Kershaw and the Los Angeles Angels' Mike Trout for most among this year's participants.

The host Indians had three players selected: Brad Hand, Francisco Lindor and Carlos Santana, a 33-year-old first-time All-Star who will also swing in the Home Run Derby.

Six of the eight participants in that contest are known — joining Santana are Acuna, Yelich, New York Mets first baseman Pete Alonso and Pittsburgh Pirates first baseman Josh Bell. Guerrero will be 20 years, 114 days old for the July 8 showcase, making him the youngest ever in the event at 116 days younger than Ken Griffey Jr. in 1990

The full field for the Home Run Derby will be announced Wednesday.

Philadelphia Phillies right fielder Bryce Harper hasn't been invited. He set pro sports jersey sales records after signing a $330 million, 13-year deal this spring, but subpar hitting this season will likely end the former Washington Nationals slugger's streak of All-Star appearances at four.

San Diego Padres third baseman Manny Machado, another big offseason acquisition, was also left off the NL team.

The starting position players were elected by fans. The rest of the rosters were filled out by player balloting and the commissioner's office.