NEW YORK -- The New York Yankees' bullpen seemingly will need all the extra rest it got in the final weeks of the regular season.

During a workout day Monday, with neither the Yankees nor the Houston Astros actually working out after playing 4 hours, 49 minutes Sunday night in Game 2 of the American League Championship Series -- an 11-inning, 3-2 walk off win for the Astros -- Aaron Boone announced his intention to deploy his bullpen for Game 4 at Yankee Stadium. Astros manager A.J. Hinch said Monday he is considering a similar strategy.

Right-hander Luis Severino will be on the mound for Game 3 vs. 2019 Cy Young candidate Gerrit Cole.

"For [Game 4 on Wednesday], it will be kind of a bullpen day," Boone said. "Obviously, depends a lot on what happens tomorrow; how we use guys, what the game ends up in, we'll kind of see where we're at going into the next day. J.A. Happ could very much be in the mix, as well as our bullpen being unleashed on that day."

The Yankees' five elite bullpen arms had a light workload in September, with only Chad Green (13.1 IP) pitching nine-plus innings. Adam Ottavino logged 8 2/3 innings, Tommy Kahnle 7 1/3 innings, Zack Britton seven innings and Aroldis Chapman 4 1/3 innings.

Having fresh arms in the bullpen served the Yankees well in their sweep of the Minnesota Twins in the American League Division Series, with relievers throwing just a third of an inning less than the total amount of innings thrown by the starters.

The Yankees' relief core combined for 13 1/3 innings pitched vs. Minnesota. Yankees starters Masahiro Tanaka, James Paxton and Severino pitched 13 2/3 innings in the ALDS.

During the 2018 ALDS vs. the Boston Red Sox, Boone was heavily criticized for his bullpen management and sticking with his starters too long. As was evident against the Twins, this postseason has been a completely different story.

While Game 1 of the ALCS started with a stellar pitching performance by Tanaka, Boone didn't let go of his quick hook. Tanaka was taken out of the game after throwing only 68 pitches over six scoreless innings, which, according to Baseball-Reference.com data, meant he became the first AL pitcher in postseason history to be removed after fewer than 70 pitches thrown over six-plus shutout innings.

In Game 2, Boone pulled starter James Paxton in the third inning and went on to make eight pitching changes. Paxton threw 2 1/3 innings; the Yankees' bullpen combined to throw 7 2/3 innings.

Boone has been ambivalent when addressing whether last year's postseason criticism has affected how he has managed his relievers so far, but there is no doubt he will not hesitate in deploying all of his bullpen weapons.

"I kind of go into the game and go into series and try and have a blueprint or a plan in place that obviously is always fluid, and you've got to make adjustments on the fly," Boone said ahead of the start of the ALCS. "Just trying to do what's going to give us the best chance to win. So I don't know if it's in response to anything or just trying to be as prepared as I can be to make sound decisions."

The Astros are also looking to their bullpen to carry the load in Game 4. When asked about his Game 4 plans, Hinch said, "the initial answer is, let's call it a bullpen day. That's the cool thing to say nowadays. It's a bullpen day."

Hinch was asked about his thoughts in the "opener" strategy that has become increasingly en vogue the last couple of seasons during the Astros' ALDS series against Tampa Bay. The Rays are credited with bringing the strategy into baseball's mainstream, but Hinch said he hadn't used it because the Astros' rotation has been so strong.

Late in the season, Hinch's No. 4 starter, Wade Miley, struggled so badly he was left off the roster for the ALCS. Another option, hard-throwing rookie Jose Urquidy, is inexperienced. And a third option, Brad Peacock, is coming off of injury. Thus bullpenning has arrived for the Astros.

"In a perfect world there's going to be a number of guys, maybe Urquidy starts, maybe he comes in the middle of the game," Hich said. "And (maybe) we go with somebody with a little bit more experience. But we haven't made that decision."

A midweek storm could throw a wrench in the Yankees' and Astros' pitching plans.

The weather forecast calls for widespread thunderstorms in the New York City area on Wednesday, with a 100% chance of rain at first pitch (8:07 pm ET). In case of a rainout, Game 4 at Yankee Stadium would be played on Thursday, and Game 5 on Friday, which is the scheduled travel day back to Houston, if necessary.

If Game 4 does get pushed back because of weather, Hinch's decision to bullpen may be moot -- he could simply use his Game 1 starter, Zack Greinke, on normal rest.

Boone stated he would not manage his bullpen differently with the possibility of a rainout.

"If weather becomes an issue, where the game were to get wiped out Wednesday, that kind of impacts what you do moving forward from there," Boone explained. "As far as Tuesday, Sevy is going. We like our matchup there; feel he gives us a great chance. But we'll kind of treat it aggressively and try to win that game. I do not really see Wednesday leaking into that too much."

If Game 4 is moved to Thursday, the Yankees would likely start Tanaka, allowing him to pitch on regular rest. Nonetheless, a rainout could possibly force playing a maximum of four straight games, which could be seen as an advantage for the Astros, who have three reliable starters who can go deep into games.

When reached for a statement, an MLB spokesperson told ESPN: "We are always in contact with our clubs about weather related issues that may impact the scheduled playing of any game."

ESPN's Bradford Doolittle contributed to this report.