Yankees’ bullpen to be tested after rainout

NEW YORK >> A rainy day in the Bronx has left a most daunting October test for the New York Yankees vaunted bullpen: four games, four days and already a deficit to overcome against the Houston Astros in their AL Championship Series.

Game 4 of the ALCS scheduled for Wednesday night was postponed a day because of poor weather, with Game 5 pushed to Friday night at Yankee Stadium and Games 6 and 7 in Houston on Saturday and Sunday, if necessary. The Astros beat New York 4-1 on Tuesday to take a 2-1 series lead.

With New York relying so heavily on its relievers this month, the starter-driven Astros may be at an advantage.

“If we’re going to win this series, our bullpen will still play a huge role, obviously,” Yankees manager Aaron Boone said. “But we’ve got to be able to get a little bit of distance out of our starters.”

Houston will pitch Zack Greinke on Thursday against the Yankees’ Masahiro Tanaka in a rematch of Game 1, both on regular rest. Tanaka pitched six sterling innings as New York won 7-0.

The Astros also announced that Justin Verlander will start Game 5 on full rest. He threw two-run ball into the seventh inning in a 3-2, 11-inning victory in Game 2 on Sunday. “It was an easy decision,” Astros manager AJ Hinch said.

New York plans to counter Verlander with James Paxton. The lefthander was pulled after allowing a run over 2.1 rocky innings in Game

2, and concerns were raised that he was tipping his pitches.

Both clubs had planned to use openers Wednesday, and New York will almost certainly still use a bullpen day in the series, probably in Game 6. Boone has ridden his relievers hard, asking them to cover

15, 1 out of 28 innings in the series.