PHILADELPHIA -- The Phillies have wrestled home-field advantage in the World Series away from the Astros after splitting the first two games at Minute Maid Park on Friday and Saturday. That leaves the Astros needing to win at least one of the next three games in what’s expected to be a raucous Citizens Bank Park to bring the Fall Classic back to Houston, beginning with Game 3 Tuesday.

Since the Astros began their historic run of advancing to six consecutive American League Championship Series in 2017 -- they’ve won four pennants and one World Series in that span -- they have won 22 postseason games on the road, which is seven more than any other team in baseball. This team is road tested.

The Phillies are 21-9 (.700) all-time in postseason games at Citizens Bank Park -- the best home record of any team in any ballpark that has hosted at least 20 playoff games. They have won all five home games this postseason, outscoring opponents by a 35-15 margin (and outhomering them 12-6).

In postseason series with the current 2-3-2 format, teams splitting the first two games at home have gone on to win the series 47 of 86 times (55 percent). In all best-of-seven series tied 1-1, the winner of the third game has won the series 68 of 98 times (69 percent).

• World Series ticket information

Here are three things the Astros need to do in Philadelphia to swing the series their way:

1. Re-engineer a pitching advantage
There’s little doubt Monday’s rainout helps the Phillies, given that it allows them to avoid a bullpen game in Game 3. Instead, Ranger Suárez will start Tuesday and Aaron Nola will come back on regular rest in Game 4, allowing Philadelphia to limit Houston’s exposure to its lesser pitchers (at least for now).

But this doesn’t have to be advantage, Philadelphia. Pitching depth has been the Astros’ strength throughout the playoffs, and now is the time to show it. After Lance McCullers Jr. and Suárez match up in a rejiggered Game 3, Houston will send Cristian Javier to the mound against Nola in Game 4. Winning that matchup would give the Astros a significant advantage the rest of the Series, allowing them to reset their rotation with Justin Verlander in Game 5 and Framber Valdez in Game 6 if necessary.

• McCullers to test big-game success with G3 start

It’s a calculated risk for the Astros not to use their ace in Game 4 like the Phillies are with Nola. Houston will instead look for a strong outing from Javier, who is set to make his first World Series start after throwing three times in relief last year. The Phillies have never faced Javier, his “invisi-ball” fastball or sweeping slider. He may have the best stuff on Houston’s staff, and he’ll be coming into the assignment hot, submitting scoreless outings in each of his past five starts (dating to Sept. 14).

“Javy's so unique in his own way, but it's definitely an advantage,” Astros pitching coach Josh Miller said. “Their hitters have not seen his stuff come from the unique delivery and the high-quality pitch combination that he has. So it should be in Javy’s advantage when he does take the mound, and I would expect him to do very well also.”

So although the Astros lost some of the matchup advantage they would have held with McCullers against Noah Syndergaard in Game 3 and Javier vs. Suárez in Game 4, they can still heavily tilt this series in their favor if McCullers and Javier do their part.

McCullers, for his part, is one of the best big-game pitchers in Astros history, going 2-2 with a 2.77 ERA and a 1.10 WHIP in 18 career postseason games. His 11 playoff starts and 68 1/3 innings are second-most in franchise history behind Verlander (17 playoff starts, 104 1/3 innings). McCullers faced the Phillies in his final regular-season start Oct. 3, holding them to one run on six hits and one walk over six innings.

2. Hope Jose Altuve stays hot
After going hitless in his first 25 at-bats of the postseason, Altuve appears to be turning the corner. He had three hits in Houston’s Game 2 victory and is 7-for-16 since one of the worst slumps of his career.

Altuve sets the tone at the top of the lineup, which was on display in Game 2 when he drilled a first-pitch double and watched Jeremy Peña and Yordan Alvarez follow him with doubles of their own. All three scored, and the Astros were on their way to a series-tying victory.

“Obviously, early in the playoffs, I was swinging at everything, and then getting slowly better at swinging at my pitch,” Altuve said.

Altuve is one of the most prolific postseason players in Major League history, with 23 career postseason homers -- second-most all-time -- and 99 postseason hits, which trails only Derek Jeter (200), Bernie Williams (128), Manny Ramirez (117), Jorge Posada (103) and Yadier Molina (102).

3. Continue to keep Schwarber and Harper in check
While opposing teams have tried to make someone besides Alvarez beat them after he hit game-winning homers in Games 1 and 2 of the ALDS against Seattle, the Astros have done a pretty good job at keeping Phillies left-handed sluggers Kyle Schwarber and Bryce Harper in control so far (though Schwarber narrowly missed a homer with a 403-foot foul ball in the eighth inning in Game 2).

Harper, the Most Valuable Player of the NLCS, went 0-for-4 in Game 2 and is 2-for-8 in the series without an extra-base hit or an RBI. Schwarber is 2-for-7 in the series, likewise without an extra-base hit or an RBI. In the regular season and postseason combined, McCullers has held left-handed batters to a .556 OPS this year (.170/.301/.255) with one homer in 113 plate appearances. Javier has been similarly effective against lefties, holding them to a .184/.270/.311 slash line.