CARSON — Three games in a week is one of the ultimate tests of a squad’s quality and depth.

The Galaxy are in the midst of one of these weeks, having to refocus quickly after Sunday’s 2-2 emotional and physical draw with New York for Wednesday night’s U.S. Open Cup semifinal at home against FC Dallas (7 p.m., ESPN2).

“We’re going to put out the best team we can to win the game and then get reorganized on Thursday and Friday to get ready for Saturday,” Galaxy coach Bruce Arena said.

The crowded schedule will have the Galaxy back in action Saturday against Colorado, but if there is ever a time for the classic cliché of taking it one game at a time, this is the week.

“We’ve had to rely on depth all year,” Galaxy midfielder Mike Magee said. “We have different guys more than capable of getting it done if Bruce decides to make changes from the weekend (against New York). And if not, guys are fit and strong, healthy and whatever lineup he puts out there will be strong.”

Robbie Keane, Steven Gerrard and Giovani dos Santos all went 90 minutes Sunday against New York. Keane and Gerrard didn’t play in the quarterfinal victory against Seattle (July 20). Neither participated in Tuesday’s outdoor training session, but Arena said “there’s a chance” they could be available Wednesday night.

Gyasi Zardes (chest strain) has missed the previous two league games and has steadily increased his work during training and appears set to return.

“We’ve prepared for this a while ago,” Arena said. “You kind of have an understanding of what you’re going to do, and then every day and every hour you make an adjustment to it. That’s just the way it is for every game, even if we’re playing one game a week.

“What I’m trying to do is position our team to win every game, and in doing that you’re going to have move some players around. It is challenging to have to play three games in a short period of time.”

Alan Gordon didn’t play Sunday and could get the start at forward. Gordon scored in the quarterfinal victory over Seattle.

He’s relishing the chance to help the club advance to its first Open Cup final since 2005.

“It has been a long time coming,” Gordon said. “We’re excited to be in the semifinal, at home. It is important to come out and have a good performance and put ourselves in position to win a trophy.”

The Galaxy haven’t been to the U.S. Open Cup finals since 2006. The last time the club won the trophy was 2005.

The winner will face Chicago or New England in the final in September.

FC DALLAS at GALAXY

Kickoff: 7 p.m. at StubHub Center

TV: ESPN2

Update: FC Dallas is in first place in the Western Conference with 44 points (13-6-5). This is the club’s first U.S. Open Cup semifinal appearance since 2014. FC Dallas’ only title in the tournament came in 1997. FC Dallas has a different look now that midfielder/forward Fabian Castillo has been loaned to Trabzonspor FC in Turkey. In nearly six seasons with the club, Castillo scored 34 goals with 30 assists. The clubs will meet twice in October in MLS play — Oct. 1 in Texas and Oct. 23 at StubHub Center.